111422009 has 2 divisors, whose sum is σ = 111422010. Its totient is φ = 111422008.

The previous prime is 111421957. The next prime is 111422021. The reversal of 111422009 is 900224111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85969984 + 25452025 = 9272^2 + 5045^2 .

It is an emirp because it is prime and its reverse (900224111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111422009 - 2²⁰ = 110373433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111427009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55711004 + 55711005.

It is an arithmetic number, because the mean of its divisors is an integer number (55711005).

Almost surely, 2^111422009 is an apocalyptic number.

It is an amenable number.

111422009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111422009 is an equidigital number, since it uses as much as digits as its factorization.

111422009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 111422009 is about 10555.6624140790. The cubic root of 111422009 is about 481.1978315520.

The spelling of 111422009 in words is "one hundred eleven million, four hundred twenty-two thousand, nine".