2401122521421 has 24 divisors (see below), whose sum is σ = 3743398222200. Its totient is φ = 1474322927616.

The previous prime is 2401122521407. The next prime is 2401122521453. The reversal of 2401122521421 is 1241252211042.

2401122521421 is a `hidden beast` number, since 2 + 4 + 0 + 11 + 225 + 2 + 1 + 421 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 363120734025 + 2038001787396 = 602595^2 + 1427586^2 .

It is not a de Polignac number, because 2401122521421 - 2³⁴ = 2383942652237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2401122521461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22800936 + ... + 22906001.

It is an arithmetic number, because the mean of its divisors is an integer number (155974925925).

Almost surely, 2^{2401122521421} is an apocalyptic number.

It is an amenable number.

2401122521421 is a deficient number, since it is larger than the sum of its proper divisors (1342275700779).

2401122521421 is a wasteful number, since it uses less digits than its factorization.

2401122521421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45707405 (or 45707402 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 2401122521421 its reverse (1241252211042), we get a palindrome (3642374732463).

The spelling of 2401122521421 in words is "two trillion, four hundred one billion, one hundred twenty-two million, five hundred twenty-one thousand, four hundred twenty-one".