222111221122212 has 24 divisors (see below), whose sum is σ = 532266529897536. Its totient is φ = 72036071715168.

The previous prime is 222111221122211. The next prime is 222111221122213. The reversal of 222111221122212 is 212221122111222.

It is an interprime number because it is at equal distance from previous prime (222111221122211) and next prime (222111221122213).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222111221122211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250125248568 + ... + 250125249455.

It is an arithmetic number, because the mean of its divisors is an integer number (22177772079064).

Almost surely, 2^{222111221122212} is an apocalyptic number.

It is an amenable number.

222111221122212 is an abundant number, since it is smaller than the sum of its proper divisors (310155308775324).

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

222111221122212 is a wasteful number, since it uses less digits than its factorization.

222111221122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500250498067 (or 500250498065 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

Adding to 222111221122212 its reverse (212221122111222), we get a palindrome (434332343233434).

The spelling of 222111221122212 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".