122221101112 has 128 divisors (see below), whose sum is σ = 276552273600. Its totient is φ = 49982464000.

The previous prime is 122221101109. The next prime is 122221101131. The reversal of 122221101112 is 211101122221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4367838 + ... + 4395730.

Almost surely, 2^122221101112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122221101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138276136800).

122221101112 is an abundant number, since it is smaller than the sum of its proper divisors (154331172488).

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

122221101112 is a wasteful number, since it uses less digits than its factorization.

122221101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28057 (or 28053 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122221101112 its reverse (211101122221), we get a palindrome (333322223333).

The spelling of 122221101112 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred one thousand, one hundred twelve".