22002203231 has 4 divisors (see below), whose sum is σ = 22330594392. Its totient is φ = 21673812072.

The previous prime is 22002203147. The next prime is 22002203257. The reversal of 22002203231 is 13230220022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22002203231 - 2³⁴ = 4822334047 is a prime.

It is a super-2 number, since 2×22002203231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002203261) 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, 164195480 + ... + 164195613.

It is an arithmetic number, because the mean of its divisors is an integer number (5582648598).

Almost surely, 2^22002203231 is an apocalyptic number.

22002203231 is a deficient number, since it is larger than the sum of its proper divisors (328391161).

22002203231 is an equidigital number, since it uses as much as digits as its factorization.

22002203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328391160.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 22002203231 its reverse (13230220022), we get a palindrome (35232423253).

The spelling of 22002203231 in words is "twenty-two billion, two million, two hundred three thousand, two hundred thirty-one".