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12213311320308 = 22371972609928279
BaseRepresentation
bin1011000110111010001000…
…0101010011000011110100
31121020120200122221220221010
42301232202011103003310
53100100330144222213
641550415011552220
72400245145222360
oct261564205230364
947216618856833
1012213311320308
1139896aa926a6a
1214530312bb670
136a7930743047
143031ad9082a0
15162a69cdeac3
hexb1ba21530f4

12213311320308 has 96 divisors (see below), whose sum is σ = 32736566016000. Its totient is φ = 3471548443776.

The previous prime is 12213311320307. The next prime is 12213311320393. The reversal of 12213311320308 is 80302311331221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213311320307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 431872113 + ... + 431900391.

It is an arithmetic number, because the mean of its divisors is an integer number (341005896000).

Almost surely, 212213311320308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12213311320308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16368283008000).

12213311320308 is an abundant number, since it is smaller than the sum of its proper divisors (20523254695692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213311320308 is a wasteful number, since it uses less digits than its factorization.

12213311320308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54589 (or 54587 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 12213311320308 its reverse (80302311331221), we get a palindrome (92515622651529).

The spelling of 12213311320308 in words is "twelve trillion, two hundred thirteen billion, three hundred eleven million, three hundred twenty thousand, three hundred eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 197 394 591 788 1182 1379 2364 2758 4137 5516 8274 16548 26099 28279 52198 56558 78297 84837 104396 113116 156594 169674 182693 197953 313188 339348 365386 395906 548079 593859 730772 791812 1096158 1187718 2192316 2375436 5141503 5570963 10283006 11141926 15424509 16712889 20566012 22283852 30849018 33425778 35990521 38996741 61698036 66851556 71981042 77993482 107971563 116990223 143962084 155986964 215943126 233980446 431886252 467960892 738053621 1476107242 2214160863 2952214484 4428321726 5166375347 8856643452 10332750694 15499126041 20665501388 30998252082 61996504164 145396563337 290793126674 436189690011 581586253348 872379380022 1017775943359 1744758760044 2035551886718 3053327830077 4071103773436 6106655660154 12213311320308