22100233203221 has 4 divisors (see below), whose sum is σ = 22813143951744. Its totient is φ = 21387322454700.

The previous prime is 22100233203163. The next prime is 22100233203227. The reversal of 22100233203221 is 12230233200122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22100233203221 - 2²² = 22100229008917 is a prime.

It is a super-3 number, since 3×22100233203221³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100233203227) 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, 356455374215 + ... + 356455374276.

It is an arithmetic number, because the mean of its divisors is an integer number (5703285987936).

Almost surely, 2^{22100233203221} is an apocalyptic number.

It is an amenable number.

22100233203221 is a deficient number, since it is larger than the sum of its proper divisors (712910748523).

22100233203221 is an equidigital number, since it uses as much as digits as its factorization.

22100233203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712910748522.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 22100233203221 its reverse (12230233200122), we get a palindrome (34330466403343).

The spelling of 22100233203221 in words is "twenty-two trillion, one hundred billion, two hundred thirty-three million, two hundred three thousand, two hundred twenty-one".