22123053021 has 4 divisors (see below), whose sum is σ = 29497404032. Its totient is φ = 14748702012.

The previous prime is 22123052999. The next prime is 22123053031. The reversal of 22123053021 is 12035032122.

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 not a de Polignac number, because 22123053021 - 2⁷ = 22123052893 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 (22123053031) 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, 3687175501 + ... + 3687175506.

It is an arithmetic number, because the mean of its divisors is an integer number (7374351008).

Almost surely, 2^22123053021 is an apocalyptic number.

It is an amenable number.

22123053021 is a deficient number, since it is larger than the sum of its proper divisors (7374351011).

22123053021 is an equidigital number, since it uses as much as digits as its factorization.

22123053021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7374351010.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 22123053021 its reverse (12035032122), we get a palindrome (34158085143).

The spelling of 22123053021 in words is "twenty-two billion, one hundred twenty-three million, fifty-three thousand, twenty-one".