122221112 has 32 divisors (see below), whose sum is σ = 247447200. Its totient is φ = 56260224.

The previous prime is 122221087. The next prime is 122221147. The reversal of 122221112 is 211122221.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44318 + ... + 46994.

It is an arithmetic number, because the mean of its divisors is an integer number (7732725).

Almost surely, 2^122221112 is an apocalyptic number.

It is an amenable number.

122221112 is an abundant number, since it is smaller than the sum of its proper divisors (125226088).

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

122221112 is a wasteful number, since it uses less digits than its factorization.

122221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135 (or 3131 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 122221112 is about 11055.3657560481. The cubic root of 122221112 is about 496.2670150058.

Adding to 122221112 its reverse (211122221), we get a palindrome (333343333).

The spelling of 122221112 in words is "one hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".