22022222222021 has 4 divisors (see below), whose sum is σ = 25168253968032. Its totient is φ = 18876190476012.

The previous prime is 22022222221981. The next prime is 22022222222113. The reversal of 22022222222021 is 12022222222022.

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 22022222222021 - 2⁶ = 22022222221957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022222272021) 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, 1573015872995 + ... + 1573015873008.

It is an arithmetic number, because the mean of its divisors is an integer number (6292063492008).

Almost surely, 2^{22022222222021} is an apocalyptic number.

It is an amenable number.

22022222222021 is a deficient number, since it is larger than the sum of its proper divisors (3146031746011).

22022222222021 is an equidigital number, since it uses as much as digits as its factorization.

22022222222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146031746010.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 22022222222021 its reverse (12022222222022), we get a palindrome (34044444444043).

Subtracting from 22022222222021 its reverse (12022222222022), we obtain a palindrome (9999999999999).

The spelling of 22022222222021 in words is "twenty-two trillion, twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty-one".