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12250012120 = 2351923776781
BaseRepresentation
bin10110110100010100…
…00101100111011000
31011121201120002111121
423122022011213120
5200042000341440
65343320135024
7612365246023
oct133212054730
934551502447
1012250012120
1152168a3465
12245a607474
131202bac8a8
14842cdc1ba
154ba6a834a
hex2da2859d8

12250012120 has 64 divisors (see below), whose sum is σ = 29029672800. Its totient is φ = 4639472640.

The previous prime is 12250012109. The next prime is 12250012157. The reversal of 12250012120 is 2121005221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12250012094 and 12250012103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1803130 + ... + 1809910.

Almost surely, 212250012120 is an apocalyptic number.

12250012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12250012120 is an abundant number, since it is smaller than the sum of its proper divisors (16779660680).

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

12250012120 is a wasteful number, since it uses less digits than its factorization.

12250012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9188 (or 9184 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 12250012120 its reverse (2121005221), we get a palindrome (14371017341).

The spelling of 12250012120 in words is "twelve billion, two hundred fifty million, twelve thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 2377 4754 6781 9508 11885 13562 19016 23770 27124 33905 45163 47540 54248 67810 90326 95080 128839 135620 180652 225815 257678 271240 361304 451630 515356 644195 903260 1030712 1288390 1806520 2576780 5153560 16118437 32236874 64473748 80592185 128947496 161184370 306250303 322368740 612500606 644737480 1225001212 1531251515 2450002424 3062503030 6125006060 12250012120