2131213330220 has 48 divisors (see below), whose sum is σ = 5029378361280. Its totient is φ = 752696077056.

The previous prime is 2131213330219. The next prime is 2131213330247. The reversal of 2131213330220 is 220333121312.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 178189115 + ... + 178201074.

It is an arithmetic number, because the mean of its divisors is an integer number (104778715860).

Almost surely, 2^{2131213330220} is an apocalyptic number.

2131213330220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131213330220 is an abundant number, since it is smaller than the sum of its proper divisors (2898165031060).

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

2131213330220 is a wasteful number, since it uses less digits than its factorization.

2131213330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356390234 (or 356390232 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2131213330220 its reverse (220333121312), we get a palindrome (2351546451532).

The spelling of 2131213330220 in words is "two trillion, one hundred thirty-one billion, two hundred thirteen million, three hundred thirty thousand, two hundred twenty".