23112132021 has 24 divisors (see below), whose sum is σ = 36433109856. Its totient is φ = 14001971040.

The previous prime is 23112131857. The next prime is 23112132031. The reversal of 23112132021 is 12023121132.

It is not a de Polignac number, because 23112132021 - 2²⁵ = 23078577589 is a prime.

It is a super-2 number, since 2×23112132021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23112131985 and 23112132003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23112132031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222111 + ... + 309123.

It is an arithmetic number, because the mean of its divisors is an integer number (1518046244).

Almost surely, 2^23112132021 is an apocalyptic number.

It is an amenable number.

23112132021 is a deficient number, since it is larger than the sum of its proper divisors (13320977835).

23112132021 is a wasteful number, since it uses less digits than its factorization.

23112132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89713 (or 89710 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23112132021 its reverse (12023121132), we get a palindrome (35135253153).

The spelling of 23112132021 in words is "twenty-three billion, one hundred twelve million, one hundred thirty-two thousand, twenty-one".