122221012112 has 80 divisors (see below), whose sum is σ = 251631960000. Its totient is φ = 57346652160.

The previous prime is 122221012073. The next prime is 122221012129. The reversal of 122221012112 is 211210122221.

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, 20779412 + ... + 20785292.

It is an arithmetic number, because the mean of its divisors is an integer number (3145399500).

Almost surely, 2^122221012112 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 122221012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125815980000).

122221012112 is an abundant number, since it is smaller than the sum of its proper divisors (129410947888).

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

122221012112 is a wasteful number, since it uses less digits than its factorization.

122221012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544 (or 6538 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122221012112 its reverse (211210122221), we get a palindrome (333431134333).

The spelling of 122221012112 in words is "one hundred twenty-two billion, two hundred twenty-one million, twelve thousand, one hundred twelve".