2312421132121 has 4 divisors (see below), whose sum is σ = 2315682657700. Its totient is φ = 2309159606544.

The previous prime is 2312421132113. The next prime is 2312421132137. The reversal of 2312421132121 is 1212311242132.

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 478360356496 + 1834060775625 = 691636^2 + 1354275^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312421132121 - 2³ = 2312421132113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312421132101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630761726 + ... + 1630763143.

It is an arithmetic number, because the mean of its divisors is an integer number (578920664425).

Almost surely, 2^{2312421132121} is an apocalyptic number.

It is an amenable number.

2312421132121 is a deficient number, since it is larger than the sum of its proper divisors (3261525579).

2312421132121 is an equidigital number, since it uses as much as digits as its factorization.

2312421132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261525578.

The product of its digits is 1152, while the sum is 25.

Adding to 2312421132121 its reverse (1212311242132), we get a palindrome (3524732374253).

The spelling of 2312421132121 in words is "two trillion, three hundred twelve billion, four hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty-one".