2131113221988 has 48 divisors (see below), whose sum is σ = 5112677310720. Its totient is φ = 690487545600.

The previous prime is 2131113221977. The next prime is 2131113222047. The reversal of 2131113221988 is 8891223111312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7858423 + ... + 8125086.

It is an arithmetic number, because the mean of its divisors is an integer number (106514110640).

Almost surely, 2^{2131113221988} is an apocalyptic number.

It is an amenable number.

2131113221988 is an abundant number, since it is smaller than the sum of its proper divisors (2981564088732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131113221988 is a wasteful number, since it uses less digits than its factorization.

2131113221988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15983828 (or 15983826 counting only the distinct ones).

The product of its digits is 41472, while the sum is 42.

The spelling of 2131113221988 in words is "two trillion, one hundred thirty-one billion, one hundred thirteen million, two hundred twenty-one thousand, nine hundred eighty-eight".