221224410312 has 16 divisors (see below), whose sum is σ = 553061025840. Its totient is φ = 73741470096.

The previous prime is 221224410307. The next prime is 221224410359. The reversal of 221224410312 is 213014422122.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 9217683763 = 221224410312 / (2 + 2 + 1 + 2 + 2 + 4 + 4 + 1 + 0 + 3 + 1 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4608841858 + ... + 4608841905.

It is an arithmetic number, because the mean of its divisors is an integer number (34566314115).

Almost surely, 2^221224410312 is an apocalyptic number.

It is an amenable number.

221224410312 is an abundant number, since it is smaller than the sum of its proper divisors (331836615528).

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

221224410312 is a wasteful number, since it uses less digits than its factorization.

221224410312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217683772 (or 9217683768 counting only the distinct ones).

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

Adding to 221224410312 its reverse (213014422122), we get a palindrome (434238832434).

The spelling of 221224410312 in words is "two hundred twenty-one billion, two hundred twenty-four million, four hundred ten thousand, three hundred twelve".