122221111112 has 16 divisors (see below), whose sum is σ = 229176313200. Its totient is φ = 61107427600.

The previous prime is 122221111093. The next prime is 122221111127. The reversal of 122221111112 is 211111122221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220562 + ... + 541377.

It is an arithmetic number, because the mean of its divisors is an integer number (14323519575).

Almost surely, 2^122221111112 is an apocalyptic number.

It is an amenable number.

122221111112 is a deficient number, since it is larger than the sum of its proper divisors (106955202088).

122221111112 is a wasteful number, since it uses less digits than its factorization.

122221111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781996 (or 781992 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 122221111112 its reverse (211111122221), we get a palindrome (333332233333).

The spelling of 122221111112 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twelve".