22023312220 has 48 divisors (see below), whose sum is σ = 56921796288. Its totient is φ = 6970014720.

The previous prime is 22023312203. The next prime is 22023312239. The reversal of 22023312220 is 2221332022.

It is a super-2 number, since 2×22023312220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6048541 + ... + 6052180.

It is an arithmetic number, because the mean of its divisors is an integer number (1185870756).

Almost surely, 2^22023312220 is an apocalyptic number.

22023312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22023312220 is an abundant number, since it is smaller than the sum of its proper divisors (34898484068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22023312220 is a wasteful number, since it uses less digits than its factorization.

22023312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100750 (or 12100748 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 22023312220 its reverse (2221332022), we get a palindrome (24244644242).

The spelling of 22023312220 in words is "twenty-two billion, twenty-three million, three hundred twelve thousand, two hundred twenty".