2120125205 has 16 divisors (see below), whose sum is σ = 2778019200. Its totient is φ = 1540474560.

The previous prime is 2120125193. The next prime is 2120125223. The reversal of 2120125205 is 5025210212.

It is a happy number.

It is not a de Polignac number, because 2120125205 - 2⁶ = 2120125141 is a prime.

It is a congruent number.

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, 43616 + ... + 78374.

It is an arithmetic number, because the mean of its divisors is an integer number (173626200).

Almost surely, 2^2120125205 is an apocalyptic number.

It is an amenable number.

2120125205 is a deficient number, since it is larger than the sum of its proper divisors (657893995).

2120125205 is a wasteful number, since it uses less digits than its factorization.

2120125205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35884.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2120125205 is about 46044.8173522276. The cubic root of 2120125205 is about 1284.6569468855.

Adding to 2120125205 its reverse (5025210212), we get a palindrome (7145335417).

The spelling of 2120125205 in words is "two billion, one hundred twenty million, one hundred twenty-five thousand, two hundred five".