221324401343 has 16 divisors (see below), whose sum is σ = 229414584960. Its totient is φ = 213382614816.

The previous prime is 221324401321. The next prime is 221324401367. The reversal of 221324401343 is 343104423122.

It is a cyclic number.

It is not a de Polignac number, because 221324401343 - 2⁸ = 221324401087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221324401313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1187648 + ... + 1361306.

It is an arithmetic number, because the mean of its divisors is an integer number (14338411560).

Almost surely, 2^221324401343 is an apocalyptic number.

221324401343 is a deficient number, since it is larger than the sum of its proper divisors (8090183617).

221324401343 is a wasteful number, since it uses less digits than its factorization.

221324401343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174086.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 221324401343 its reverse (343104423122), we get a palindrome (564428824465).

The spelling of 221324401343 in words is "two hundred twenty-one billion, three hundred twenty-four million, four hundred one thousand, three hundred forty-three".