2421400332321 has 12 divisors (see below), whose sum is σ = 3519855828372. Its totient is φ = 1603984932576.

The previous prime is 2421400332313. The next prime is 2421400332353. The reversal of 2421400332321 is 1232330041242.

2421400332321 is a `hidden beast` number, since 2 + 4 + 2 + 1 + 4 + 0 + 0 + 332 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 429601593600 + 1991798738721 = 655440^2 + 1411311^2 .

It is not a de Polignac number, because 2421400332321 - 2³ = 2421400332313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421400339321) 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 11 ways as a sum of consecutive naturals, for example, 856828146 + ... + 856830971.

It is an arithmetic number, because the mean of its divisors is an integer number (293321319031).

Almost surely, 2^{2421400332321} is an apocalyptic number.

It is an amenable number.

2421400332321 is a deficient number, since it is larger than the sum of its proper divisors (1098455496051).

2421400332321 is a wasteful number, since it uses less digits than its factorization.

2421400332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713659280 (or 1713659277 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 2421400332321 its reverse (1232330041242), we get a palindrome (3653730373563).

The spelling of 2421400332321 in words is "two trillion, four hundred twenty-one billion, four hundred million, three hundred thirty-two thousand, three hundred twenty-one".