221112231331 has 4 divisors (see below), whose sum is σ = 234118833192. Its totient is φ = 208105629472.

The previous prime is 221112231299. The next prime is 221112231377. The reversal of 221112231331 is 133132211122.

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

It is not a de Polignac number, because 221112231331 - 2⁵ = 221112231299 is a prime.

It is a super-2 number, since 2×221112231331² (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 (221112231631) 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, 6503300905 + ... + 6503300938.

It is an arithmetic number, because the mean of its divisors is an integer number (58529708298).

Almost surely, 2^221112231331 is an apocalyptic number.

221112231331 is a deficient number, since it is larger than the sum of its proper divisors (13006601861).

221112231331 is a wasteful number, since it uses less digits than its factorization.

221112231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13006601860.

The product of its digits is 432, while the sum is 22.

Adding to 221112231331 its reverse (133132211122), we get a palindrome (354244442453).

The spelling of 221112231331 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred thirty-one thousand, three hundred thirty-one".