20232121131 has 12 divisors (see below), whose sum is σ = 29513524560. Its totient is φ = 13354534800.

The previous prime is 20232121127. The next prime is 20232121157. The reversal of 20232121131 is 13112123202.

It is not a de Polignac number, because 20232121131 - 2² = 20232121127 is a prime.

It is a super-2 number, since 2×20232121131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20232121171) 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, 11127871 + ... + 11129688.

It is an arithmetic number, because the mean of its divisors is an integer number (2459460380).

Almost surely, 2^20232121131 is an apocalyptic number.

20232121131 is a deficient number, since it is larger than the sum of its proper divisors (9281403429).

20232121131 is a wasteful number, since it uses less digits than its factorization.

20232121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22257666 (or 22257663 counting only the distinct ones).

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

Adding to 20232121131 its reverse (13112123202), we get a palindrome (33344244333).

The spelling of 20232121131 in words is "twenty billion, two hundred thirty-two million, one hundred twenty-one thousand, one hundred thirty-one".