2131122202120 has 32 divisors (see below), whose sum is σ = 4795123325400. Its totient is φ = 852431392768.

The previous prime is 2131122202093. The next prime is 2131122202229. The reversal of 2131122202120 is 212022211312.

It can be written as a sum of positive squares in 4 ways, for example, as 1630274419684 + 500847782436 = 1276822^2 + 707706^2 .

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, 1524546 + ... + 2566414.

Almost surely, 2^{2131122202120} is an apocalyptic number.

2131122202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131122202120 is an abundant number, since it is smaller than the sum of its proper divisors (2664001123280).

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

2131122202120 is a wasteful number, since it uses less digits than its factorization.

2131122202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093017 (or 1093013 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2131122202120 its reverse (212022211312), we get a palindrome (2343144413432).

The spelling of 2131122202120 in words is "two trillion, one hundred thirty-one billion, one hundred twenty-two million, two hundred two thousand, one hundred twenty".