222109100 has 36 divisors (see below), whose sum is σ = 486770928. Its totient is φ = 87960000.

The previous prime is 222109081. The next prime is 222109103. The reversal of 222109100 is 1901222.

It is not an unprimeable number, because it can be changed into a prime (222109103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 896 + ... + 21095.

Almost surely, 2^222109100 is an apocalyptic number.

222109100 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 222109100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243385464).

222109100 is an abundant number, since it is smaller than the sum of its proper divisors (264661828).

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

222109100 is a wasteful number, since it uses less digits than its factorization.

222109100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22106 (or 22099 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 222109100 is about 14903.3251323320. The cubic root of 222109100 is about 605.6040684729.

The spelling of 222109100 in words is "two hundred twenty-two million, one hundred nine thousand, one hundred".