221333112313 has 4 divisors (see below), whose sum is σ = 226731480948. Its totient is φ = 215934743680.

The previous prime is 221333112307. The next prime is 221333112353. The reversal of 221333112313 is 313211333122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26395851024 + 194937261289 = 162468^2 + 441517^2 .

It is a cyclic number.

It is not a de Polignac number, because 221333112313 - 2¹⁷ = 221332981241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221333112353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2699184256 + ... + 2699184337.

It is an arithmetic number, because the mean of its divisors is an integer number (56682870237).

Almost surely, 2^221333112313 is an apocalyptic number.

It is an amenable number.

221333112313 is a deficient number, since it is larger than the sum of its proper divisors (5398368635).

221333112313 is an equidigital number, since it uses as much as digits as its factorization.

221333112313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5398368634.

The product of its digits is 1944, while the sum is 25.

Adding to 221333112313 its reverse (313211333122), we get a palindrome (534544445435).

The spelling of 221333112313 in words is "two hundred twenty-one billion, three hundred thirty-three million, one hundred twelve thousand, three hundred thirteen".