2120121125 has 32 divisors (see below), whose sum is σ = 2751840000. Its totient is φ = 1628827200.

The previous prime is 2120121097. The next prime is 2120121139. The reversal of 2120121125 is 5211210212.

It is not a de Polignac number, because 2120121125 - 2²² = 2115926821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 719906 + ... + 722844.

It is an arithmetic number, because the mean of its divisors is an integer number (85995000).

Almost surely, 2^2120121125 is an apocalyptic number.

2120121125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2120121125 is a deficient number, since it is larger than the sum of its proper divisors (631718875).

2120121125 is a wasteful number, since it uses less digits than its factorization.

2120121125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182 (or 3172 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2120121125 is about 46044.7730475458. The cubic root of 2120121125 is about 1284.6561228141.

Adding to 2120121125 its reverse (5211210212), we get a palindrome (7331331337).

The spelling of 2120121125 in words is "two billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-five".