22123020231 has 24 divisors (see below), whose sum is σ = 34540623936. Its totient is φ = 13563910080.

The previous prime is 22123020013. The next prime is 22123020239. The reversal of 22123020231 is 13202032122.

It is not a de Polignac number, because 22123020231 - 2⁹ = 22123019719 is a prime.

It is a super-2 number, since 2×22123020231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123020239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317160 + ... + 380573.

It is an arithmetic number, because the mean of its divisors is an integer number (1439192664).

Almost surely, 2^22123020231 is an apocalyptic number.

22123020231 is a deficient number, since it is larger than the sum of its proper divisors (12417603705).

22123020231 is a wasteful number, since it uses less digits than its factorization.

22123020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698023 (or 698020 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22123020231 its reverse (13202032122), we get a palindrome (35325052353).

The spelling of 22123020231 in words is "twenty-two billion, one hundred twenty-three million, twenty thousand, two hundred thirty-one".