221112133131 has 8 divisors (see below), whose sum is σ = 294827813584. Its totient is φ = 147402270720.

The previous prime is 221112133111. The next prime is 221112133159. The reversal of 221112133131 is 131331211122.

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

It is not a de Polignac number, because 221112133131 - 2¹⁰ = 221112132107 is a prime.

It is a super-2 number, since 2×221112133131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221112133098 and 221112133107.

It is not an unprimeable number, because it can be changed into a prime (221112133111) 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, 1365046 + ... + 1518411.

It is an arithmetic number, because the mean of its divisors is an integer number (36853476698).

Almost surely, 2^221112133131 is an apocalyptic number.

221112133131 is a deficient number, since it is larger than the sum of its proper divisors (73715680453).

221112133131 is a wasteful number, since it uses less digits than its factorization.

221112133131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909021.

The product of its digits is 216, while the sum is 21.

Adding to 221112133131 its reverse (131331211122), we get a palindrome (352443344253).

The spelling of 221112133131 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred thirty-three thousand, one hundred thirty-one".