1111111097 has 2 divisors, whose sum is σ = 1111111098. Its totient is φ = 1111111096.

The previous prime is 1111111087. The next prime is 1111111121. The reversal of 1111111097 is 7901111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1041288361 + 69822736 = 32269^2 + 8356^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111111097 - 2⁴ = 1111111081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111111037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555555548 + 555555549.

It is an arithmetic number, because the mean of its divisors is an integer number (555555549).

Almost surely, 2^1111111097 is an apocalyptic number.

It is an amenable number.

1111111097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111111097 is an equidigital number, since it uses as much as digits as its factorization.

1111111097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63, while the sum is 23.

The square root of 1111111097 is about 33333.3331216667. Note that the first 3 decimals coincide. The cubic root of 1111111097 is about 1035.7441642666.

The spelling of 1111111097 in words is "one billion, one hundred eleven million, one hundred eleven thousand, ninety-seven".