22000323021 has 4 divisors (see below), whose sum is σ = 29333764032. Its totient is φ = 14666882012.

The previous prime is 22000322989. The next prime is 22000323031. The reversal of 22000323021 is 12032300022.

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 22000323021 - 2⁵ = 22000322989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000323031) 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, 3666720501 + ... + 3666720506.

It is an arithmetic number, because the mean of its divisors is an integer number (7333441008).

Almost surely, 2^22000323021 is an apocalyptic number.

It is an amenable number.

22000323021 is a deficient number, since it is larger than the sum of its proper divisors (7333441011).

22000323021 is an equidigital number, since it uses as much as digits as its factorization.

22000323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333441010.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 22000323021 its reverse (12032300022), we get a palindrome (34032623043).

The spelling of 22000323021 in words is "twenty-two billion, three hundred twenty-three thousand, twenty-one".