111121001099 has 2 divisors, whose sum is σ = 111121001100. Its totient is φ = 111121001098.

The previous prime is 111121001087. The next prime is 111121001197. The reversal of 111121001099 is 990100121111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111121001099 - 2¹² = 111120997003 is a prime.

It is not a weakly prime, because it can be changed into another prime (111121001039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560500549 + 55560500550.

It is an arithmetic number, because the mean of its divisors is an integer number (55560500550).

Almost surely, 2^111121001099 is an apocalyptic number.

111121001099 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121001099 is an equidigital number, since it uses as much as digits as its factorization.

111121001099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 26.

The spelling of 111121001099 in words is "one hundred eleven billion, one hundred twenty-one million, one thousand, ninety-nine".