21033200131 has 2 divisors, whose sum is σ = 21033200132. Its totient is φ = 21033200130.

The previous prime is 21033200087. The next prime is 21033200161. The reversal of 21033200131 is 13100233012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21033200131 is a prime.

It is a super-2 number, since 2×21033200131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21033200161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516600065 + 10516600066.

It is an arithmetic number, because the mean of its divisors is an integer number (10516600066).

Almost surely, 2^21033200131 is an apocalyptic number.

21033200131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033200131 is an equidigital number, since it uses as much as digits as its factorization.

21033200131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21033200131 its reverse (13100233012), we get a palindrome (34133433143).

The spelling of 21033200131 in words is "twenty-one billion, thirty-three million, two hundred thousand, one hundred thirty-one".