22023031421 has 4 divisors (see below), whose sum is σ = 22396303200. Its totient is φ = 21649759644.

The previous prime is 22023031409. The next prime is 22023031441. The reversal of 22023031421 is 12413032022.

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 22023031421 - 2¹⁸ = 22022769277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22023031393 and 22023031402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22023031441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186635801 + ... + 186635918.

It is an arithmetic number, because the mean of its divisors is an integer number (5599075800).

Almost surely, 2^22023031421 is an apocalyptic number.

It is an amenable number.

22023031421 is a deficient number, since it is larger than the sum of its proper divisors (373271779).

22023031421 is an equidigital number, since it uses as much as digits as its factorization.

22023031421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373271778.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22023031421 its reverse (12413032022), we get a palindrome (34436063443).

The spelling of 22023031421 in words is "twenty-two billion, twenty-three million, thirty-one thousand, four hundred twenty-one".