222203221200 has 90 divisors (see below), whose sum is σ = 771106913174. Its totient is φ = 59254191360.

The previous prime is 222203221199. The next prime is 222203221213. The reversal of 222203221200 is 2122302222.

222203221200 is a `hidden beast` number, since 2 + 2 + 220 + 322 + 120 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 345744 + 222202875456 = 588^2 + 471384^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a super-2 number, since 2×222203221200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 30857959 + ... + 30865158.

Almost surely, 2^222203221200 is an apocalyptic number.

222203221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222203221200 is an abundant number, since it is smaller than the sum of its proper divisors (548903691974).

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

222203221200 is a wasteful number, since it uses less digits than its factorization.

222203221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61723141 (or 61723127 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 222203221200 its reverse (2122302222), we get a palindrome (224325523422).

The spelling of 222203221200 in words is "two hundred twenty-two billion, two hundred three million, two hundred twenty-one thousand, two hundred".