111211099 has 2 divisors, whose sum is σ = 111211100. Its totient is φ = 111211098.

The previous prime is 111211081. The next prime is 111211109. The reversal of 111211099 is 990112111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111211099 - 2¹⁷ = 111080027 is a prime.

It is not a weakly prime, because it can be changed into another prime (111211019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605549 + 55605550.

It is an arithmetic number, because the mean of its divisors is an integer number (55605550).

Almost surely, 2^111211099 is an apocalyptic number.

111211099 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211099 is an equidigital number, since it uses as much as digits as its factorization.

111211099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 25.

The square root of 111211099 is about 10545.6673093740. The cubic root of 111211099 is about 480.8940210235.

The spelling of 111211099 in words is "one hundred eleven million, two hundred eleven thousand, ninety-nine".