21010131130 has 64 divisors (see below), whose sum is σ = 38929984128. Its totient is φ = 8161689600.

The previous prime is 21010131127. The next prime is 21010131161. The reversal of 21010131130 is 3113101012.

It is a super-2 number, since 2×21010131130² (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 21010131130.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13122330 + ... + 13123930.

It is an arithmetic number, because the mean of its divisors is an integer number (608281002).

Almost surely, 2^21010131130 is an apocalyptic number.

21010131130 is a deficient number, since it is larger than the sum of its proper divisors (17919852998).

21010131130 is a wasteful number, since it uses less digits than its factorization.

21010131130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21010131130 its reverse (3113101012), we get a palindrome (24123232142).

The spelling of 21010131130 in words is "twenty-one billion, ten million, one hundred thirty-one thousand, one hundred thirty".