2125796076121 has 3 divisors (see below), whose sum is σ = 2125797534133. Its totient is φ = 2125794618110.

The previous prime is 2125796076067. The next prime is 2125796076139. The reversal of 2125796076121 is 1216706975212.

It is a happy number.

The square root of 2125796076121 is 1458011.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2125796076121 - 2⁷ = 2125796075993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125796076421) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 729006 + ... + 2187016.

Almost surely, 2^{2125796076121} is an apocalyptic number.

2125796076121 is the 1458011-st square number.

2125796076121 is the 729006-th centered octagonal number.

It is an amenable number.

2125796076121 is a deficient number, since it is larger than the sum of its proper divisors (1458012).

2125796076121 is an frugal number, since it uses more digits than its factorization.

2125796076121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916022 (or 1458011 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

Multiplying 2125796076121 by its sum of digits (49), we get a square (104164007729929 = 10206077²).

The spelling of 2125796076121 in words is "two trillion, one hundred twenty-five billion, seven hundred ninety-six million, seventy-six thousand, one hundred twenty-one".