2121335424425 has 48 divisors (see below), whose sum is σ = 3137284058112. Its totient is φ = 1391233166400.

The previous prime is 2121335424421. The next prime is 2121335424431. The reversal of 2121335424425 is 5244245331212.

It is not a de Polignac number, because 2121335424425 - 2² = 2121335424421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121335424421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45906182 + ... + 45952368.

It is an arithmetic number, because the mean of its divisors is an integer number (65360084544).

Almost surely, 2^{2121335424425} is an apocalyptic number.

2121335424425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2121335424425 is a deficient number, since it is larger than the sum of its proper divisors (1015948633687).

2121335424425 is a wasteful number, since it uses less digits than its factorization.

2121335424425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57638 (or 57633 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The spelling of 2121335424425 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-five million, four hundred twenty-four thousand, four hundred twenty-five".