23111111210 has 128 divisors (see below), whose sum is σ = 48711849984. Its totient is φ = 7801896960.

The previous prime is 23111111189. The next prime is 23111111213. The reversal of 23111111210 is 1211111132.

It is a super-2 number, since 2×23111111210² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23111111213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65470394 + ... + 65470746.

It is an arithmetic number, because the mean of its divisors is an integer number (380561328).

Almost surely, 2^23111111210 is an apocalyptic number.

23111111210 is an abundant number, since it is smaller than the sum of its proper divisors (25600738774).

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

23111111210 is a wasteful number, since it uses less digits than its factorization.

23111111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 23111111210 its reverse (1211111132), we get a palindrome (24322222342).

The spelling of 23111111210 in words is "twenty-three billion, one hundred eleven million, one hundred eleven thousand, two hundred ten".