222123232100 has 72 divisors (see below), whose sum is σ = 600944328768. Its totient is φ = 69233212800.

The previous prime is 222123232091. The next prime is 222123232127. The reversal of 222123232100 is 1232321222.

It is a happy number.

It is a super-3 number, since 3×222123232100³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14415887 + ... + 14431286.

Almost surely, 2^222123232100 is an apocalyptic number.

222123232100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222123232100 is an abundant number, since it is smaller than the sum of its proper divisors (378821096668).

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

222123232100 is a wasteful number, since it uses less digits than its factorization.

222123232100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28847205 (or 28847198 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 222123232100 its reverse (1232321222), we get a palindrome (223355553322).

The spelling of 222123232100 in words is "two hundred twenty-two billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred".