222100222212 has 168 divisors, whose sum is σ = 637272233472. Its totient is φ = 67139150400.

The previous prime is 222100222199. The next prime is 222100222213. The reversal of 222100222212 is 212222001222.

222100222212 is a `hidden beast` number, since 22 + 210 + 0 + 222 + 212 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (222100222213) 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 55 ways as a sum of consecutive naturals, for example, 13495773 + ... + 13512219.

It is an arithmetic number, because the mean of its divisors is an integer number (3793287104).

Almost surely, 2^222100222212 is an apocalyptic number.

222100222212 is a gapful number since it is divisible by the number (22) 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 222100222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318636116736).

222100222212 is an abundant number, since it is smaller than the sum of its proper divisors (415172011260).

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

222100222212 is a wasteful number, since it uses less digits than its factorization.

222100222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16901 (or 16884 counting only the distinct ones).

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

Adding to 222100222212 its reverse (212222001222), we get a palindrome (434322223434).

The spelling of 222100222212 in words is "two hundred twenty-two billion, one hundred million, two hundred twenty-two thousand, two hundred twelve".