111421113 has 4 divisors (see below), whose sum is σ = 148561488. Its totient is φ = 74280740.

The previous prime is 111421091. The next prime is 111421139. The reversal of 111421113 is 311124111.

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 111421113 - 2⁶ = 111421049 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111421092 and 111421101.

It is not an unprimeable number, because it can be changed into a prime (111421153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18570183 + ... + 18570188.

It is an arithmetic number, because the mean of its divisors is an integer number (37140372).

Almost surely, 2^111421113 is an apocalyptic number.

It is an amenable number.

111421113 is a deficient number, since it is larger than the sum of its proper divisors (37140375).

111421113 is an equidigital number, since it uses as much as digits as its factorization.

111421113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37140374.

The product of its digits is 24, while the sum is 15.

The square root of 111421113 is about 10555.6199723181. The cubic root of 111421113 is about 481.1965416979.

Adding to 111421113 its reverse (311124111), we get a palindrome (422545224).

The spelling of 111421113 in words is "one hundred eleven million, four hundred twenty-one thousand, one hundred thirteen".