222222122211200 has 384 divisors, whose sum is σ = 584315501414400. Its totient is φ = 83381407948800.

The previous prime is 222222122211143. The next prime is 222222122211217. The reversal of 222222122211200 is 2112221222222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 436126181 + ... + 436635419.

It is an arithmetic number, because the mean of its divisors is an integer number (1521654951600).

Almost surely, 2^{222222122211200} is an apocalyptic number.

222222122211200 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 222222122211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292157750707200).

222222122211200 is an abundant number, since it is smaller than the sum of its proper divisors (362093379203200).

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

222222122211200 is a wasteful number, since it uses less digits than its factorization.

222222122211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509430 (or 509413 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 222222122211200 its reverse (2112221222222), we get a palindrome (224334343433422).

The spelling of 222222122211200 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, two hundred".