222100222122012 has 192 divisors, whose sum is σ = 563436780673536. Its totient is φ = 67688251223040.

The previous prime is 222100222121989. The next prime is 222100222122043. The reversal of 222100222122012 is 210221222001222.

It is a self number, because there is not a number n which added to its sum of digits gives 222100222122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7999850043 + ... + 7999877805.

It is an arithmetic number, because the mean of its divisors is an integer number (2934566566008).

Almost surely, 2^{222100222122012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222100222122012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281718390336768).

222100222122012 is an abundant number, since it is smaller than the sum of its proper divisors (341336558551524).

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

222100222122012 is a wasteful number, since it uses less digits than its factorization.

222100222122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29060 (or 29058 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222100222122012 its reverse (210221222001222), we get a palindrome (432321444123234).

The spelling of 222100222122012 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twenty-two million, one hundred twenty-two thousand, twelve".