23021212231 has 12 divisors (see below), whose sum is σ = 24331553064. Its totient is φ = 21778218000.

The previous prime is 23021212211. The next prime is 23021212271. The reversal of 23021212231 is 13221212032.

It is not a de Polignac number, because 23021212231 - 2⁷ = 23021212103 is a prime.

It is a super-5 number, since 5×23021212231⁵ (a number of 53 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 23021212199 and 23021212208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021212211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207576 + ... + 298546.

It is an arithmetic number, because the mean of its divisors is an integer number (2027629422).

Almost surely, 2^23021212231 is an apocalyptic number.

23021212231 is a deficient number, since it is larger than the sum of its proper divisors (1310340833).

23021212231 is an equidigital number, since it uses as much as digits as its factorization.

23021212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91710 (or 91691 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23021212231 its reverse (13221212032), we get a palindrome (36242424263).

It can be divided in two parts, 230212122 and 31, that added together give a triangular number (230212153 = T₂₁₄₅₇).

The spelling of 23021212231 in words is "twenty-three billion, twenty-one million, two hundred twelve thousand, two hundred thirty-one".