221110322112 has 168 divisors, whose sum is σ = 672738966432. Its totient is φ = 69193728000.

The previous prime is 221110322107. The next prime is 221110322113. The reversal of 221110322112 is 211223011122.

221110322112 is a `hidden beast` number, since 221 + 1 + 10 + 322 + 112 = 666.

It is a super-2 number, since 2×221110322112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110322113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3898437 + ... + 3954747.

Almost surely, 2^221110322112 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 221110322112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336369483216).

221110322112 is an abundant number, since it is smaller than the sum of its proper divisors (451628644320).

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

221110322112 is a wasteful number, since it uses less digits than its factorization.

221110322112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56747 (or 56734 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 221110322112 its reverse (211223011122), we get a palindrome (432333333234).

The spelling of 221110322112 in words is "two hundred twenty-one billion, one hundred ten million, three hundred twenty-two thousand, one hundred twelve".