221203412344 has 16 divisors (see below), whose sum is σ = 439153833600. Its totient is φ = 104095723392.

The previous prime is 221203412323. The next prime is 221203412369. The reversal of 221203412344 is 443214302122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813247704 + ... + 813247975.

It is an arithmetic number, because the mean of its divisors is an integer number (27447114600).

Almost surely, 2^221203412344 is an apocalyptic number.

It is an amenable number.

221203412344 is a deficient number, since it is larger than the sum of its proper divisors (217950421256).

221203412344 is a wasteful number, since it uses less digits than its factorization.

221203412344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626495702 (or 1626495698 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221203412344 its reverse (443214302122), we get a palindrome (664417714466).

The spelling of 221203412344 in words is "two hundred twenty-one billion, two hundred three million, four hundred twelve thousand, three hundred forty-four".