111344121 has 18 divisors (see below), whose sum is σ = 187089162. Its totient is φ = 63624960.

The previous prime is 111344113. The next prime is 111344153. The reversal of 111344121 is 121443111.

It can be written as a sum of positive squares in only one way, i.e., 103306896 + 8037225 = 10164^2 + 2835^2 .

It is not a de Polignac number, because 111344121 - 2³ = 111344113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111344094 and 111344103.

It is not an unprimeable number, because it can be changed into a prime (111344621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 125800 + ... + 126681.

Almost surely, 2^111344121 is an apocalyptic number.

It is an amenable number.

111344121 is a deficient number, since it is larger than the sum of its proper divisors (75745041).

111344121 is a wasteful number, since it uses less digits than its factorization.

111344121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252501 (or 252491 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 111344121 is about 10551.9723748691. The cubic root of 111344121 is about 481.0856805398.

Adding to 111344121 its reverse (121443111), we get a palindrome (232787232).

The spelling of 111344121 in words is "one hundred eleven million, three hundred forty-four thousand, one hundred twenty-one".