21131120131130 has 64 divisors (see below), whose sum is σ = 39510691799040. Its totient is φ = 8131157913600.

The previous prime is 21131120131117. The next prime is 21131120131181. The reversal of 21131120131130 is 3113102113112.

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, 9797351 + ... + 11757989.

It is an arithmetic number, because the mean of its divisors is an integer number (617354559360).

Almost surely, 2^{21131120131130} is an apocalyptic number.

21131120131130 is a deficient number, since it is larger than the sum of its proper divisors (18379571667910).

21131120131130 is a wasteful number, since it uses less digits than its factorization.

21131120131130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961055.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 21131120131130 its reverse (3113102113112), we get a palindrome (24244222244242).

The spelling of 21131120131130 in words is "twenty-one trillion, one hundred thirty-one billion, one hundred twenty million, one hundred thirty-one thousand, one hundred thirty".