22131112200 has 96 divisors (see below), whose sum is σ = 70972243200. Its totient is φ = 5698120960.

The previous prime is 22131112183. The next prime is 22131112217. The reversal of 22131112200 is 221113122.

It is an interprime number because it is at equal distance from previous prime (22131112183) and next prime (22131112217).

It is a super-2 number, since 2×22131112200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22131112200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 618552 + ... + 653351.

It is an arithmetic number, because the mean of its divisors is an integer number (739294200).

Almost surely, 2^22131112200 is an apocalyptic number.

22131112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131112200 is an abundant number, since it is smaller than the sum of its proper divisors (48841131000).

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

22131112200 is a wasteful number, since it uses less digits than its factorization.

22131112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271951 (or 1271942 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22131112200 its reverse (221113122), we get a palindrome (22352225322).

The spelling of 22131112200 in words is "twenty-two billion, one hundred thirty-one million, one hundred twelve thousand, two hundred".