2120620510057 has 6 divisors (see below), whose sum is σ = 2466844266858. Its totient is φ = 1817674722864.

The previous prime is 2120620510051. The next prime is 2120620510079. The reversal of 2120620510057 is 7500150260212.

It can be written as a sum of positive squares in only one way, i.e., 1929018209881 + 191602300176 = 1388891^2 + 437724^2 .

It is not a de Polignac number, because 2120620510057 - 2²⁷ = 2120486292329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120620510051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21638984748 + ... + 21638984845.

It is an arithmetic number, because the mean of its divisors is an integer number (411140711143).

Almost surely, 2^{2120620510057} is an apocalyptic number.

It is an amenable number.

2120620510057 is a deficient number, since it is larger than the sum of its proper divisors (346223756801).

2120620510057 is an equidigital number, since it uses as much as digits as its factorization.

2120620510057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43277969607 (or 43277969600 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 2120620510057 its reverse (7500150260212), we get a palindrome (9620770770269).

The spelling of 2120620510057 in words is "two trillion, one hundred twenty billion, six hundred twenty million, five hundred ten thousand, fifty-seven".