122112221112 has 64 divisors (see below), whose sum is σ = 387657849600. Its totient is φ = 34889205600.

The previous prime is 122112221087. The next prime is 122112221129. The reversal of 122112221112 is 211122211221.

It is a super-2 number, since 2×122112221112² (a number of 23 digits) contains 22 as substring.

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40379514 + ... + 40382537.

It is an arithmetic number, because the mean of its divisors is an integer number (6057153900).

Almost surely, 2^122112221112 is an apocalyptic number.

122112221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122112221112 is an abundant number, since it is smaller than the sum of its proper divisors (265545628488).

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

122112221112 is a wasteful number, since it uses less digits than its factorization.

122112221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80762073 (or 80762063 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 122112221112 its reverse (211122211221), we get a palindrome (333234432333).

The spelling of 122112221112 in words is "one hundred twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twelve".