21130131231130 has 16 divisors (see below), whose sum is σ = 38034379401120. Its totient is φ = 8452020673552.

The previous prime is 21130131231109. The next prime is 21130131231149. The reversal of 21130131231130 is 3113213103112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088320 + ... + 6591259.

It is an arithmetic number, because the mean of its divisors is an integer number (2377148712570).

Almost surely, 2^{21130131231130} is an apocalyptic number.

21130131231130 is a deficient number, since it is larger than the sum of its proper divisors (16904248169990).

21130131231130 is a wasteful number, since it uses less digits than its factorization.

21130131231130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7954733.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21130131231130 its reverse (3113213103112), we get a palindrome (24243344334242).

The spelling of 21130131231130 in words is "twenty-one trillion, one hundred thirty billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred thirty".