22303644421 has 4 divisors (see below), whose sum is σ = 22311035200. Its totient is φ = 22296253644.

The previous prime is 22303644403. The next prime is 22303644443. The reversal of 22303644421 is 12444630322.

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 22303644421 - 2⁹ = 22303643909 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 (22303644401) 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, 3690861 + ... + 3696898.

It is an arithmetic number, because the mean of its divisors is an integer number (5577758800).

Almost surely, 2^22303644421 is an apocalyptic number.

It is an amenable number.

22303644421 is a deficient number, since it is larger than the sum of its proper divisors (7390779).

22303644421 is an equidigital number, since it uses as much as digits as its factorization.

22303644421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7390778.

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 22303644421 in words is "twenty-two billion, three hundred three million, six hundred forty-four thousand, four hundred twenty-one".