111222211100999 has 2 divisors, whose sum is σ = 111222211101000. Its totient is φ = 111222211100998.

The previous prime is 111222211100939. The next prime is 111222211101007. The reversal of 111222211100999 is 999001112222111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111222211100999 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111222211100909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611105550499 + 55611105550500.

It is an arithmetic number, because the mean of its divisors is an integer number (55611105550500).

Almost surely, 2^{111222211100999} is an apocalyptic number.

111222211100999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222211100999 is an equidigital number, since it uses as much as digits as its factorization.

111222211100999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 41.

The spelling of 111222211100999 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred eleven million, one hundred thousand, nine hundred ninety-nine".