222200212212 has 36 divisors (see below), whose sum is σ = 612733919616. Its totient is φ = 67333397520.

The previous prime is 222200212181. The next prime is 222200212249. The reversal of 222200212212 is 212212002222.

222200212212 is a `hidden beast` number, since 22 + 220 + 0 + 212 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280555428 + ... + 280556219.

It is an arithmetic number, because the mean of its divisors is an integer number (17020386656).

Almost surely, 2^222200212212 is an apocalyptic number.

222200212212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222200212212 is an abundant number, since it is smaller than the sum of its proper divisors (390533707404).

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

222200212212 is a wasteful number, since it uses less digits than its factorization.

222200212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561111668 (or 561111663 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222200212212 its reverse (212212002222), we get a palindrome (434412214434).

The spelling of 222200212212 in words is "two hundred twenty-two billion, two hundred million, two hundred twelve thousand, two hundred twelve".