21322020013131 has 32 divisors (see below), whose sum is σ = 29803087641600. Its totient is φ = 13533592945664.

The previous prime is 21322020013123. The next prime is 21322020013157. The reversal of 21322020013131 is 13131002022312.

It is a cyclic number.

It is not a de Polignac number, because 21322020013131 - 2³ = 21322020013123 is a prime.

It is a super-2 number, since 2×21322020013131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21322020013098 and 21322020013107.

It is not an unprimeable number, because it can be changed into a prime (21322020813131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46346170 + ... + 46803968.

It is an arithmetic number, because the mean of its divisors is an integer number (931346488800).

Almost surely, 2^{21322020013131} is an apocalyptic number.

21322020013131 is a deficient number, since it is larger than the sum of its proper divisors (8481067628469).

21322020013131 is a wasteful number, since it uses less digits than its factorization.

21322020013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460955.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21322020013131 its reverse (13131002022312), we get a palindrome (34453022035443).

The spelling of 21322020013131 in words is "twenty-one trillion, three hundred twenty-two billion, twenty million, thirteen thousand, one hundred thirty-one".