111111097 has 4 divisors (see below), whose sum is σ = 113695120. Its totient is φ = 108527076.

The previous prime is 111111089. The next prime is 111111109. The reversal of 111111097 is 790111111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111111097 - 2³ = 111111089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291947 + ... + 1292032.

It is an arithmetic number, because the mean of its divisors is an integer number (28423780).

Almost surely, 2^111111097 is an apocalyptic number.

It is an amenable number.

111111097 is a deficient number, since it is larger than the sum of its proper divisors (2584023).

111111097 is an equidigital number, since it uses as much as digits as its factorization.

111111097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584022.

The product of its (nonzero) digits is 63, while the sum is 22.

The square root of 111111097 is about 10540.9248645458. The cubic root of 111111097 is about 480.7498364174.

The spelling of 111111097 in words is "one hundred eleven million, one hundred eleven thousand, ninety-seven".