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23121225050 = 25271154710979
BaseRepresentation
bin10101100010001000…
…011110010101011010
32012200100122221002112
4111202020132111122
5334323013200200
614342144032322
71445652112250
oct254210362532
965610587075
1023121225050
119895368660
1245933026a2
132246224871
141194a465d0
15904ca8535
hex56221e55a

23121225050 has 96 divisors (see below), whose sum is σ = 53720133120. Its totient is φ = 7192785600.

The previous prime is 23121225041. The next prime is 23121225053. The reversal of 23121225050 is 5052212132.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23121225053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2100461 + ... + 2111439.

It is an arithmetic number, because the mean of its divisors is an integer number (559584720).

Almost surely, 223121225050 is an apocalyptic number.

23121225050 is an abundant number, since it is smaller than the sum of its proper divisors (30598908070).

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

23121225050 is a wasteful number, since it uses less digits than its factorization.

23121225050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556 (or 11551 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 23121225050 its reverse (5052212132), we get a palindrome (28173437182).

The spelling of 23121225050 in words is "twenty-three billion, one hundred twenty-one million, two hundred twenty-five thousand, fifty".

Divisors: 1 2 5 7 10 11 14 22 25 35 50 55 70 77 110 154 175 275 350 385 547 550 770 1094 1925 2735 3829 3850 5470 6017 7658 10979 12034 13675 19145 21958 27350 30085 38290 42119 54895 60170 76853 84238 95725 109790 120769 150425 153706 191450 210595 241538 274475 300850 384265 421190 548950 603845 768530 845383 1052975 1207690 1690766 1921325 2105950 3019225 3842650 4226915 6005513 6038450 8453830 12011026 21134575 30027565 42038591 42269150 60055130 66060643 84077182 132121286 150137825 210192955 300275650 330303215 420385910 462424501 660606430 924849002 1050964775 1651516075 2101929550 2312122505 3303032150 4624245010 11560612525 23121225050