221112312232 has 96 divisors (see below), whose sum is σ = 489290699520. Its totient is φ = 93385716480.

The previous prime is 221112312229. The next prime is 221112312241. The reversal of 221112312232 is 232213211122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44838807 + ... + 44843737.

It is an arithmetic number, because the mean of its divisors is an integer number (5096778120).

Almost surely, 2^221112312232 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 221112312232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244645349760).

221112312232 is an abundant number, since it is smaller than the sum of its proper divisors (268178387288).

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

221112312232 is a wasteful number, since it uses less digits than its factorization.

221112312232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591 (or 6580 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 221112312232 its reverse (232213211122), we get a palindrome (453325523354).

The spelling of 221112312232 in words is "two hundred twenty-one billion, one hundred twelve million, three hundred twelve thousand, two hundred thirty-two".