221304113112 has 32 divisors (see below), whose sum is σ = 563699159280. Its totient is φ = 72376187520.

The previous prime is 221304113071. The next prime is 221304113113. The reversal of 221304113112 is 211311403122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221304113113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86989339 + ... + 86991882.

Almost surely, 2^221304113112 is an apocalyptic number.

It is an amenable number.

221304113112 is an abundant number, since it is smaller than the sum of its proper divisors (342395046168).

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

221304113112 is a wasteful number, since it uses less digits than its factorization.

221304113112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173981283 (or 173981279 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221304113112 its reverse (211311403122), we get a palindrome (432615516234).

The spelling of 221304113112 in words is "two hundred twenty-one billion, three hundred four million, one hundred thirteen thousand, one hundred twelve".