222203112100 has 216 divisors, whose sum is σ = 527377855032. Its totient is φ = 81197875200.

The previous prime is 222203112071. The next prime is 222203112119. The reversal of 222203112100 is 1211302222.

It is a happy number.

It can be written as a sum of positive squares in 36 ways, for example, as 181921016484 + 40282095616 = 426522^2 + 200704^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 328216962 + ... + 328217638.

Almost surely, 2^222203112100 is an apocalyptic number.

222203112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222203112100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263688927516).

222203112100 is an abundant number, since it is smaller than the sum of its proper divisors (305174742932).

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

222203112100 is a wasteful number, since it uses less digits than its factorization.

222203112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 222203112100 its reverse (1211302222), we get a palindrome (223414414322).

The spelling of 222203112100 in words is "two hundred twenty-two billion, two hundred three million, one hundred twelve thousand, one hundred".