21113300131 has 16 divisors (see below), whose sum is σ = 26339120640. Its totient is φ = 16441894080.

The previous prime is 21113300123. The next prime is 21113300147. The reversal of 21113300131 is 13100331112.

It is a cyclic number.

It is not a de Polignac number, because 21113300131 - 2³ = 21113300123 is a prime.

It is a super-2 number, since 2×21113300131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21113300111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44850 + ... + 210328.

It is an arithmetic number, because the mean of its divisors is an integer number (1646195040).

Almost surely, 2^21113300131 is an apocalyptic number.

21113300131 is a deficient number, since it is larger than the sum of its proper divisors (5225820509).

21113300131 is a wasteful number, since it uses less digits than its factorization.

21113300131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167154.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21113300131 its reverse (13100331112), we get a palindrome (34213631243).

The spelling of 21113300131 in words is "twenty-one billion, one hundred thirteen million, three hundred thousand, one hundred thirty-one".