222112100 has 54 divisors (see below), whose sum is σ = 560686770. Its totient is φ = 76151040.

The previous prime is 222112087. The next prime is 222112141. The reversal of 222112100 is 1211222.

It is a happy number.

222112100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 18593344 + 203518756 = 4312^2 + 14266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17765 + ... + 27564.

Almost surely, 2^222112100 is an apocalyptic number.

222112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222112100 is an abundant number, since it is smaller than the sum of its proper divisors (338574670).

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

222112100 is a wasteful number, since it uses less digits than its factorization.

222112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45357 (or 45343 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 222112100 is about 14903.4257806720. The cubic root of 222112100 is about 605.6067950669.

Adding to 222112100 its reverse (1211222), we get a palindrome (223323322).

The spelling of 222112100 in words is "two hundred twenty-two million, one hundred twelve thousand, one hundred".