20211133131 has 24 divisors (see below), whose sum is σ = 35120433920. Its totient is φ = 10941364656.

The previous prime is 20211133099. The next prime is 20211133133. The reversal of 20211133131 is 13133111202.

It is not a de Polignac number, because 20211133131 - 2⁵ = 20211133099 is a prime.

It is a super-2 number, since 2×20211133131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211133133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8441215 + ... + 8443608.

Almost surely, 2^20211133131 is an apocalyptic number.

20211133131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20211133131 is a deficient number, since it is larger than the sum of its proper divisors (14909300789).

20211133131 is a wasteful number, since it uses less digits than its factorization.

20211133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16884855 (or 16884852 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 20211133131 its reverse (13133111202), we get a palindrome (33344244333).

The spelling of 20211133131 in words is "twenty billion, two hundred eleven million, one hundred thirty-three thousand, one hundred thirty-one".