221010120112112 has 80 divisors (see below), whose sum is σ = 457563138370560. Its totient is φ = 103105903228416.

The previous prime is 221010120112109. The next prime is 221010120112147. The reversal of 221010120112112 is 211211021010122.

It is a congruent number.

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, 101228348 + ... + 103388580.

It is an arithmetic number, because the mean of its divisors is an integer number (5719539229632).

Almost surely, 2^{221010120112112} 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 221010120112112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228781569185280).

221010120112112 is an abundant number, since it is smaller than the sum of its proper divisors (236553018258448).

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

221010120112112 is a wasteful number, since it uses less digits than its factorization.

221010120112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165350 (or 2165344 counting only the distinct ones).

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

Adding to 221010120112112 its reverse (211211021010122), we get a palindrome (432221141122234).

The spelling of 221010120112112 in words is "two hundred twenty-one trillion, ten billion, one hundred twenty million, one hundred twelve thousand, one hundred twelve".