23121211310 has 16 divisors (see below), whose sum is σ = 42403430016. Its totient is φ = 9073984608.

The previous prime is 23121211307. The next prime is 23121211361. The reversal of 23121211310 is 1311212132.

It is a super-2 number, since 2×23121211310² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21811934 + ... + 21812993.

It is an arithmetic number, because the mean of its divisors is an integer number (2650214376).

Almost surely, 2^23121211310 is an apocalyptic number.

23121211310 is a deficient number, since it is larger than the sum of its proper divisors (19282218706).

23121211310 is a wasteful number, since it uses less digits than its factorization.

23121211310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43624987.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 23121211310 its reverse (1311212132), we get a palindrome (24432423442).

The spelling of 23121211310 in words is "twenty-three billion, one hundred twenty-one million, two hundred eleven thousand, three hundred ten".