111122132221 has 8 divisors (see below), whose sum is σ = 117661740480. Its totient is φ = 104582858688.

The previous prime is 111122132137. The next prime is 111122132287. The reversal of 111122132221 is 122231221111.

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

It is not a de Polignac number, because 111122132221 - 2²⁷ = 110987914493 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 (111122132291) 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, 1003410 + ... + 1108636.

It is an arithmetic number, because the mean of its divisors is an integer number (14707717560).

Almost surely, 2^111122132221 is an apocalyptic number.

It is an amenable number.

111122132221 is a deficient number, since it is larger than the sum of its proper divisors (6539608259).

111122132221 is a wasteful number, since it uses less digits than its factorization.

111122132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167363.

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

Adding to 111122132221 its reverse (122231221111), we get a palindrome (233353353332).

The spelling of 111122132221 in words is "one hundred eleven billion, one hundred twenty-two million, one hundred thirty-two thousand, two hundred twenty-one".