21022033131 has 36 divisors (see below), whose sum is σ = 34453298880. Its totient is φ = 12329618400.

The previous prime is 21022033099. The next prime is 21022033139. The reversal of 21022033131 is 13133022012.

It is not a de Polignac number, because 21022033131 - 2⁵ = 21022033099 is a prime.

It is a super-2 number, since 2×21022033131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21022033139) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 277596 + ... + 345113.

It is an arithmetic number, because the mean of its divisors is an integer number (957036080).

Almost surely, 2^21022033131 is an apocalyptic number.

21022033131 is a deficient number, since it is larger than the sum of its proper divisors (13431265749).

21022033131 is a wasteful number, since it uses less digits than its factorization.

21022033131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622768 (or 622754 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21022033131 its reverse (13133022012), we get a palindrome (34155055143).

The spelling of 21022033131 in words is "twenty-one billion, twenty-two million, thirty-three thousand, one hundred thirty-one".