221233323313 has 4 divisors (see below), whose sum is σ = 222558073920. Its totient is φ = 219908572708.

The previous prime is 221233323271. The next prime is 221233323319. The reversal of 221233323313 is 313323332122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221233323313 is a prime.

It is a super-2 number, since 2×221233323313² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221233323319) 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, 662375053 + ... + 662375386.

It is an arithmetic number, because the mean of its divisors is an integer number (55639518480).

Almost surely, 2^221233323313 is an apocalyptic number.

It is an amenable number.

221233323313 is a deficient number, since it is larger than the sum of its proper divisors (1324750607).

221233323313 is a wasteful number, since it uses less digits than its factorization.

221233323313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324750606.

The product of its digits is 11664, while the sum is 28.

Adding to 221233323313 its reverse (313323332122), we get a palindrome (534556655435).

The spelling of 221233323313 in words is "two hundred twenty-one billion, two hundred thirty-three million, three hundred twenty-three thousand, three hundred thirteen".