22031223100 has 36 divisors (see below), whose sum is σ = 50619978864. Its totient is φ = 8294106880.

The previous prime is 22031223089. The next prime is 22031223113. The reversal of 22031223100 is 132213022.

It is a super-2 number, since 2×22031223100² (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 11 ways as a sum of consecutive naturals, for example, 6478072 + ... + 6481471.

It is an arithmetic number, because the mean of its divisors is an integer number (1406110524).

Almost surely, 2^22031223100 is an apocalyptic number.

22031223100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22031223100 is an abundant number, since it is smaller than the sum of its proper divisors (28588755764).

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

22031223100 is a wasteful number, since it uses less digits than its factorization.

22031223100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12959574 (or 12959567 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 22031223100 its reverse (132213022), we get a palindrome (22163436122).

The spelling of 22031223100 in words is "twenty-two billion, thirty-one million, two hundred twenty-three thousand, one hundred".