111122399 has 2 divisors, whose sum is σ = 111122400. Its totient is φ = 111122398.

The previous prime is 111122377. The next prime is 111122413. The reversal of 111122399 is 993221111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111122399 - 2²⁰ = 110073823 is a 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 (111122329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561199 + 55561200.

It is an arithmetic number, because the mean of its divisors is an integer number (55561200).

Almost surely, 2^111122399 is an apocalyptic number.

111122399 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122399 is an equidigital number, since it uses as much as digits as its factorization.

111122399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 29.

The square root of 111122399 is about 10541.4609518795. The cubic root of 111122399 is about 480.7661361708.

The spelling of 111122399 in words is "one hundred eleven million, one hundred twenty-two thousand, three hundred ninety-nine".