221112243204 has 24 divisors (see below), whose sum is σ = 516005656320. Its totient is φ = 73693068384.

The previous prime is 221112243137. The next prime is 221112243221. The reversal of 221112243204 is 402342211122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1292724 + ... + 1453739.

It is an arithmetic number, because the mean of its divisors is an integer number (21500235680).

Almost surely, 2^221112243204 is an apocalyptic number.

It is an amenable number.

221112243204 is an abundant number, since it is smaller than the sum of its proper divisors (294893413116).

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

221112243204 is a wasteful number, since it uses less digits than its factorization.

221112243204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753179 (or 2753177 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 221112243204 its reverse (402342211122), we get a palindrome (623454454326).

The spelling of 221112243204 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred forty-three thousand, two hundred four".