111132122221 has 4 divisors (see below), whose sum is σ = 111189675744. Its totient is φ = 111074568700.

The previous prime is 111132122183. The next prime is 111132122267. The reversal of 111132122221 is 122221231111.

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 not a de Polignac number, because 111132122221 - 2¹⁷ = 111131991149 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 (111132129221) 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, 28773865 + ... + 28777726.

It is an arithmetic number, because the mean of its divisors is an integer number (27797418936).

Almost surely, 2^111132122221 is an apocalyptic number.

It is an amenable number.

111132122221 is a deficient number, since it is larger than the sum of its proper divisors (57553523).

111132122221 is an equidigital number, since it uses as much as digits as its factorization.

111132122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57553522.

The product of its digits is 96, while the sum is 19.

Adding to 111132122221 its reverse (122221231111), we get a palindrome (233353353332).

The spelling of 111132122221 in words is "one hundred eleven billion, one hundred thirty-two million, one hundred twenty-two thousand, two hundred twenty-one".