222138200 has 48 divisors (see below), whose sum is σ = 517452000. Its totient is φ = 88686720.

The previous prime is 222138199. The next prime is 222138221. The reversal of 222138200 is 2831222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 207266 + ... + 208334.

It is an arithmetic number, because the mean of its divisors is an integer number (10780250).

Almost surely, 2^222138200 is an apocalyptic number.

222138200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222138200 is an abundant number, since it is smaller than the sum of its proper divisors (295313800).

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

222138200 is a wasteful number, since it uses less digits than its factorization.

222138200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 222138200 is about 14904.3013925511. The cubic root of 222138200 is about 605.6305153989.

Adding to 222138200 its reverse (2831222), we get a palindrome (224969422).

The spelling of 222138200 in words is "two hundred twenty-two million, one hundred thirty-eight thousand, two hundred".