20212213131 has 24 divisors (see below), whose sum is σ = 31892530176. Its totient is φ = 12233294640.

The previous prime is 20212213067. The next prime is 20212213139. The reversal of 20212213131 is 13131221202.

It is not a de Polignac number, because 20212213131 - 2⁶ = 20212213067 is a prime.

It is a super-2 number, since 2×20212213131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20212213139) 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, 63835 + ... + 210948.

It is an arithmetic number, because the mean of its divisors is an integer number (1328855424).

Almost surely, 2^20212213131 is an apocalyptic number.

20212213131 is a deficient number, since it is larger than the sum of its proper divisors (11680317045).

20212213131 is a wasteful number, since it uses less digits than its factorization.

20212213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275543 (or 275540 counting only the distinct ones).

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

Adding to 20212213131 its reverse (13131221202), we get a palindrome (33343434333).

The spelling of 20212213131 in words is "twenty billion, two hundred twelve million, two hundred thirteen thousand, one hundred thirty-one".