222271900 has 18 divisors (see below), whose sum is σ = 482330240. Its totient is φ = 88908720.

The previous prime is 222271871. The next prime is 222271901. The reversal of 222271900 is 9172222.

It is a super-2 number, since 2×222271900² = 98809595059220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222271901) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1111260 + ... + 1111459.

Almost surely, 2^222271900 is an apocalyptic number.

222271900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222271900 is an abundant number, since it is smaller than the sum of its proper divisors (260058340).

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

222271900 is a wasteful number, since it uses less digits than its factorization.

222271900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222733 (or 2222726 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 222271900 is about 14908.7860002081. The cubic root of 222271900 is about 605.7519961710.

The spelling of 222271900 in words is "two hundred twenty-two million, two hundred seventy-one thousand, nine hundred".