2321025136421 has 4 divisors (see below), whose sum is σ = 2377635505644. Its totient is φ = 2264414767200.

The previous prime is 2321025136411. The next prime is 2321025136447. The reversal of 2321025136421 is 1246315201232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 470026792225 + 1850998344196 = 685585^2 + 1360514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321025136421 - 2¹⁰ = 2321025135397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321025136411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28305184550 + ... + 28305184631.

It is an arithmetic number, because the mean of its divisors is an integer number (594408876411).

Almost surely, 2^{2321025136421} is an apocalyptic number.

It is an amenable number.

2321025136421 is a deficient number, since it is larger than the sum of its proper divisors (56610369223).

2321025136421 is an equidigital number, since it uses as much as digits as its factorization.

2321025136421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56610369222.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 2321025136421 in words is "two trillion, three hundred twenty-one billion, twenty-five million, one hundred thirty-six thousand, four hundred twenty-one".