23121253031200 has 36 divisors (see below), whose sum is σ = 56444758964370. Its totient is φ = 9248501212160.

The previous prime is 23121253031197. The next prime is 23121253031269. The reversal of 23121253031200 is 213035212132.

It can be written as a sum of positive squares in 3 ways, for example, as 22210747757584 + 910505273616 = 4712828^2 + 954204^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14450782345 + ... + 14450783944.

Almost surely, 2^{23121253031200} is an apocalyptic number.

23121253031200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121253031200 is an abundant number, since it is smaller than the sum of its proper divisors (33323505933170).

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

23121253031200 is a wasteful number, since it uses less digits than its factorization.

23121253031200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28901566309 (or 28901566296 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 23121253031200 its reverse (213035212132), we get a palindrome (23334288243332).

The spelling of 23121253031200 in words is "twenty-three trillion, one hundred twenty-one billion, two hundred fifty-three million, thirty-one thousand, two hundred".