22121242004399 has 4 divisors (see below), whose sum is σ = 22121294865264. Its totient is φ = 22121189143536.

The previous prime is 22121242004317. The next prime is 22121242004401. The reversal of 22121242004399 is 99340024212122.

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

It is a cyclic number.

It is not a de Polignac number, because 22121242004399 - 2²⁰ = 22121240955823 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 (22111242004399) 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, 25797662 + ... + 26641355.

It is an arithmetic number, because the mean of its divisors is an integer number (5530323716316).

Almost surely, 2^{22121242004399} is an apocalyptic number.

22121242004399 is a deficient number, since it is larger than the sum of its proper divisors (52860865).

22121242004399 is an equidigital number, since it uses as much as digits as its factorization.

22121242004399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52860864.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 22121242004399 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred forty-two million, four thousand, three hundred ninety-nine".