131220102090 has 128 divisors (see below), whose sum is σ = 409709187072. Its totient is φ = 26081003520.

The previous prime is 131220102053. The next prime is 131220102107. The reversal of 131220102090 is 90201022131.

131220102090 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1181767 + ... + 1288026.

It is an arithmetic number, because the mean of its divisors is an integer number (3200853024).

Almost surely, 2^131220102090 is an apocalyptic number.

131220102090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131220102090 is an abundant number, since it is smaller than the sum of its proper divisors (278489084982).

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

131220102090 is a wasteful number, since it uses less digits than its factorization.

131220102090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469844.

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 131220102090 in words is "one hundred thirty-one billion, two hundred twenty million, one hundred two thousand, ninety".