221312313233111 has 8 divisors (see below), whose sum is σ = 222154933280544. Its totient is φ = 220469701734400.

The previous prime is 221312313232981. The next prime is 221312313233147. The reversal of 221312313233111 is 111332313213122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221312313233111 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 (221312313233311) 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, 52380311 + ... + 56447511.

It is an arithmetic number, because the mean of its divisors is an integer number (27769366660068).

Almost surely, 2^{221312313233111} is an apocalyptic number.

221312313233111 is a deficient number, since it is larger than the sum of its proper divisors (842620047433).

221312313233111 is a wasteful number, since it uses less digits than its factorization.

221312313233111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274361.

The product of its digits is 3888, while the sum is 29.

Adding to 221312313233111 its reverse (111332313213122), we get a palindrome (332644626446233).

The spelling of 221312313233111 in words is "two hundred twenty-one trillion, three hundred twelve billion, three hundred thirteen million, two hundred thirty-three thousand, one hundred eleven".