222161200 has 60 divisors (see below), whose sum is σ = 535469200. Its totient is φ = 88577280.

The previous prime is 222161189. The next prime is 222161231. The reversal of 222161200 is 2161222.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158101 + ... + 159499.

Almost surely, 2^222161200 is an apocalyptic number.

222161200 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 222161200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267734600).

222161200 is an abundant number, since it is smaller than the sum of its proper divisors (313308000).

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

222161200 is a wasteful number, since it uses less digits than its factorization.

222161200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814 (or 1803 counting only the distinct ones).

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

The square root of 222161200 is about 14905.0729619147. The cubic root of 222161200 is about 605.6514168335.

The spelling of 222161200 in words is "two hundred twenty-two million, one hundred sixty-one thousand, two hundred".