22231202231 has 4 divisors (see below), whose sum is σ = 25407088272. Its totient is φ = 19055316192.

The previous prime is 22231202177. The next prime is 22231202233. The reversal of 22231202231 is 13220213222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13220213222 = 2 ⋅6610106611.

It is a cyclic number.

It is not a de Polignac number, because 22231202231 - 2⁶ = 22231202167 is a prime.

It is a super-2 number, since 2×22231202231² (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 (22231202233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587943010 + ... + 1587943023.

It is an arithmetic number, because the mean of its divisors is an integer number (6351772068).

Almost surely, 2^22231202231 is an apocalyptic number.

22231202231 is a deficient number, since it is larger than the sum of its proper divisors (3175886041).

22231202231 is an equidigital number, since it uses as much as digits as its factorization.

22231202231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175886040.

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

Adding to 22231202231 its reverse (13220213222), we get a palindrome (35451415453).

The spelling of 22231202231 in words is "twenty-two billion, two hundred thirty-one million, two hundred two thousand, two hundred thirty-one".