22031021223 has 32 divisors (see below), whose sum is σ = 34098436800. Its totient is φ = 14040432000.

The previous prime is 22031021209. The next prime is 22031021231. The reversal of 22031021223 is 32212013022.

It is not a de Polignac number, because 22031021223 - 2¹⁴ = 22031004839 is a prime.

It is a super-2 number, since 2×22031021223² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22031021196 and 22031021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031021323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60208 + ... + 218373.

It is an arithmetic number, because the mean of its divisors is an integer number (1065576150).

Almost surely, 2^22031021223 is an apocalyptic number.

22031021223 is a deficient number, since it is larger than the sum of its proper divisors (12067415577).

22031021223 is a wasteful number, since it uses less digits than its factorization.

22031021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278720 (or 278714 counting only the distinct ones).

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

Adding to 22031021223 its reverse (32212013022), we get a palindrome (54243034245).

The spelling of 22031021223 in words is "twenty-two billion, thirty-one million, twenty-one thousand, two hundred twenty-three".