111132031221 has 24 divisors (see below), whose sum is σ = 160980541280. Its totient is φ = 73877637600.

The previous prime is 111132031217. The next prime is 111132031229. The reversal of 111132031221 is 122130231111.

111132031221 is a `hidden beast` number, since 1 + 1 + 11 + 320 + 312 + 21 = 666.

It is not a de Polignac number, because 111132031221 - 2² = 111132031217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111132031194 and 111132031203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111132031229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4583751 + ... + 4607931.

Almost surely, 2^111132031221 is an apocalyptic number.

It is an amenable number.

111132031221 is a deficient number, since it is larger than the sum of its proper divisors (49848510059).

111132031221 is a wasteful number, since it uses less digits than its factorization.

111132031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25617 (or 25614 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111132031221 its reverse (122130231111), we get a palindrome (233262262332).

The spelling of 111132031221 in words is "one hundred eleven billion, one hundred thirty-two million, thirty-one thousand, two hundred twenty-one".