111421183 has 2 divisors, whose sum is σ = 111421184. Its totient is φ = 111421182.

The previous prime is 111421153. The next prime is 111421243. The reversal of 111421183 is 381124111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111421183 - 2⁵ = 111421151 is a prime.

It is a super-2 number, since 2×111421183² = 24829360042238978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111421153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55710591 + 55710592.

It is an arithmetic number, because the mean of its divisors is an integer number (55710592).

Almost surely, 2^111421183 is an apocalyptic number.

111421183 is a deficient number, since it is larger than the sum of its proper divisors (1).

111421183 is an equidigital number, since it uses as much as digits as its factorization.

111421183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 22.

The square root of 111421183 is about 10555.6232880868. The cubic root of 111421183 is about 481.1966424680.

Adding to 111421183 its reverse (381124111), we get a palindrome (492545294).

The spelling of 111421183 in words is "one hundred eleven million, four hundred twenty-one thousand, one hundred eighty-three".