21032200131 has 24 divisors (see below), whose sum is σ = 30516178224. Its totient is φ = 12874782720.

The previous prime is 21032200127. The next prime is 21032200151. The reversal of 21032200131 is 13100223012.

It is not a de Polignac number, because 21032200131 - 2² = 21032200127 is a prime.

It is a super-2 number, since 2×21032200131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21032200131.

It is not an unprimeable number, because it can be changed into a prime (21032200151) 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, 260290 + ... + 331383.

It is an arithmetic number, because the mean of its divisors is an integer number (1271507426).

Almost surely, 2^21032200131 is an apocalyptic number.

21032200131 is a deficient number, since it is larger than the sum of its proper divisors (9483978093).

21032200131 is a wasteful number, since it uses less digits than its factorization.

21032200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591751 (or 591734 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21032200131 its reverse (13100223012), we get a palindrome (34132423143).

The spelling of 21032200131 in words is "twenty-one billion, thirty-two million, two hundred thousand, one hundred thirty-one".