221044120312 has 32 divisors (see below), whose sum is σ = 415568800080. Its totient is φ = 110226170880.

The previous prime is 221044120309. The next prime is 221044120313. The reversal of 221044120312 is 213021440122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221044120313) 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, 4568487 + ... + 4616617.

Almost surely, 2^221044120312 is an apocalyptic number.

It is an amenable number.

221044120312 is a deficient number, since it is larger than the sum of its proper divisors (194524679768).

221044120312 is a wasteful number, since it uses less digits than its factorization.

221044120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49663 (or 49659 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 221044120312 its reverse (213021440122), we get a palindrome (434065560434).

The spelling of 221044120312 in words is "two hundred twenty-one billion, forty-four million, one hundred twenty thousand, three hundred twelve".