2131220120122 has 16 divisors (see below), whose sum is σ = 3198906849600. Its totient is φ = 1064918067840.

The previous prime is 2131220120093. The next prime is 2131220120143. The reversal of 2131220120122 is 2210210221312.

It is a self number, because there is not a number n which added to its sum of digits gives 2131220120122.

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, 19460097 + ... + 19569307.

It is an arithmetic number, because the mean of its divisors is an integer number (199931678100).

Almost surely, 2^{2131220120122} is an apocalyptic number.

2131220120122 is a deficient number, since it is larger than the sum of its proper divisors (1067686729478).

2131220120122 is a wasteful number, since it uses less digits than its factorization.

2131220120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115461.

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

Adding to 2131220120122 its reverse (2210210221312), we get a palindrome (4341430341434).

The spelling of 2131220120122 in words is "two trillion, one hundred thirty-one billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-two".