22234957921 has 4 divisors (see below), whose sum is σ = 24256317744. Its totient is φ = 20213598100.

The previous prime is 22234957909. The next prime is 22234957939. The reversal of 22234957921 is 12975943222.

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 22234957921 - 2⁵ = 22234957889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22234957991) 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, 1010679895 + ... + 1010679916.

It is an arithmetic number, because the mean of its divisors is an integer number (6064079436).

Almost surely, 2^22234957921 is an apocalyptic number.

It is an amenable number.

22234957921 is a deficient number, since it is larger than the sum of its proper divisors (2021359823).

22234957921 is a wasteful number, since it uses less digits than its factorization.

22234957921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021359822.

The product of its digits is 544320, while the sum is 46.

The spelling of 22234957921 in words is "twenty-two billion, two hundred thirty-four million, nine hundred fifty-seven thousand, nine hundred twenty-one".