111113999 has 2 divisors, whose sum is σ = 111114000. Its totient is φ = 111113998.

The previous prime is 111113971. The next prime is 111114011. The reversal of 111113999 is 999311111.

It is a strong prime.

It is an emirp because it is prime and its reverse (999311111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111113999 - 2¹² = 111109903 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111113929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556999 + 55557000.

It is an arithmetic number, because the mean of its divisors is an integer number (55557000).

Almost surely, 2^111113999 is an apocalyptic number.

111113999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111113999 is an equidigital number, since it uses as much as digits as its factorization.

111113999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2187, while the sum is 35.

The square root of 111113999 is about 10541.0625176023. The cubic root of 111113999 is about 480.7540217896.

The spelling of 111113999 in words is "one hundred eleven million, one hundred thirteen thousand, nine hundred ninety-nine".