222122100112 has 80 divisors (see below), whose sum is σ = 495488286720. Its totient is φ = 95400374400.

The previous prime is 222122100107. The next prime is 222122100199. The reversal of 222122100112 is 211001221222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1194037 + ... + 1367467.

It is an arithmetic number, because the mean of its divisors is an integer number (6193603584).

Almost surely, 2^222122100112 is an apocalyptic number.

222122100112 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 222122100112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247744143360).

222122100112 is an abundant number, since it is smaller than the sum of its proper divisors (273366186608).

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

222122100112 is a wasteful number, since it uses less digits than its factorization.

222122100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173852 (or 173846 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222122100112 its reverse (211001221222), we get a palindrome (433123321334).

The spelling of 222122100112 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred thousand, one hundred twelve".