122221101121112 has 128 divisors (see below), whose sum is σ = 278424184896000. Its totient is φ = 49101270128640.

The previous prime is 122221101121099. The next prime is 122221101121117. The reversal of 122221101121112 is 211121101122221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221101121117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255657839 + ... + 256135457.

It is an arithmetic number, because the mean of its divisors is an integer number (2175188944500).

Almost surely, 2^{122221101121112} 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 122221101121112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139212092448000).

122221101121112 is an abundant number, since it is smaller than the sum of its proper divisors (156203083774888).

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

122221101121112 is a wasteful number, since it uses less digits than its factorization.

122221101121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478729 (or 478725 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 122221101121112 its reverse (211121101122221), we get a palindrome (333342202243333).

The spelling of 122221101121112 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, one hundred twelve".