23121510010 has 16 divisors (see below), whose sum is σ = 41834362536. Its totient is φ = 9200683008.

The previous prime is 23121509977. The next prime is 23121510019. The reversal of 23121510010 is 1001512132.

It can be written as a sum of positive squares in 4 ways, for example, as 21791959641 + 1329550369 = 147621^2 + 36463^2 .

It is not an unprimeable number, because it can be changed into a prime (23121510019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5988099 + ... + 5991958.

Almost surely, 2^23121510010 is an apocalyptic number.

23121510010 is a deficient number, since it is larger than the sum of its proper divisors (18712852526).

23121510010 is a wasteful number, since it uses less digits than its factorization.

23121510010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11980257.

The product of its (nonzero) digits is 60, while the sum is 16.

The spelling of 23121510010 in words is "twenty-three billion, one hundred twenty-one million, five hundred ten thousand, ten".