221223112 has 16 divisors (see below), whose sum is σ = 452502000. Its totient is φ = 100555920.

The previous prime is 221223109. The next prime is 221223127. The reversal of 221223112 is 211322122.

It is a happy number.

221223112 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256862 + ... + 1257037.

It is an arithmetic number, because the mean of its divisors is an integer number (28281375).

Almost surely, 2^221223112 is an apocalyptic number.

221223112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221223112 is an abundant number, since it is smaller than the sum of its proper divisors (231278888).

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

221223112 is a wasteful number, since it uses less digits than its factorization.

221223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513916 (or 2513912 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 221223112 is about 14873.5709229492. The cubic root of 221223112 is about 604.7977485732.

Adding to 221223112 its reverse (211322122), we get a palindrome (432545234).

The spelling of 221223112 in words is "two hundred twenty-one million, two hundred twenty-three thousand, one hundred twelve".