111143422609 has 2 divisors, whose sum is σ = 111143422610. Its totient is φ = 111143422608.

The previous prime is 111143422601. The next prime is 111143422673. The reversal of 111143422609 is 906224341111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70320432400 + 40822990209 = 265180^2 + 202047^2 .

It is a cyclic number.

It is not a de Polignac number, because 111143422609 - 2³ = 111143422601 is a prime.

It is not a weakly prime, because it can be changed into another prime (111143422601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55571711304 + 55571711305.

It is an arithmetic number, because the mean of its divisors is an integer number (55571711305).

Almost surely, 2^111143422609 is an apocalyptic number.

It is an amenable number.

111143422609 is a deficient number, since it is larger than the sum of its proper divisors (1).

111143422609 is an equidigital number, since it uses as much as digits as its factorization.

111143422609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 111143422609 in words is "one hundred eleven billion, one hundred forty-three million, four hundred twenty-two thousand, six hundred nine".