23110031221021 has 8 divisors (see below), whose sum is σ = 23163029144640. Its totient is φ = 23057034914112.

The previous prime is 23110031221001. The next prime is 23110031221027. The reversal of 23110031221021 is 12012213001132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23110031221021 - 2⁹ = 23110031220509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23110031221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23110031221027) 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, 31012821 + ... + 31749253.

It is an arithmetic number, because the mean of its divisors is an integer number (2895378643080).

Almost surely, 2^{23110031221021} is an apocalyptic number.

It is an amenable number.

23110031221021 is a deficient number, since it is larger than the sum of its proper divisors (52997923619).

23110031221021 is an equidigital number, since it uses as much as digits as its factorization.

23110031221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808355.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 23110031221021 its reverse (12012213001132), we get a palindrome (35122244222153).

The spelling of 23110031221021 in words is "twenty-three trillion, one hundred ten billion, thirty-one million, two hundred twenty-one thousand, twenty-one".