111001010999999 has 2 divisors, whose sum is σ = 111001011000000. Its totient is φ = 111001010999998.

The previous prime is 111001010999993. The next prime is 111001011000001. The reversal of 111001010999999 is 999999010100111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111001010999999 - 2²⁰ = 111001009951423 is a prime.

Together with 111001011000001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111001010999993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500505499999 + 55500505500000.

It is an arithmetic number, because the mean of its divisors is an integer number (55500505500000).

Almost surely, 2^{111001010999999} is an apocalyptic number.

111001010999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001010999999 is an equidigital number, since it uses as much as digits as its factorization.

111001010999999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 531441, while the sum is 59.

The spelling of 111001010999999 in words is "one hundred eleven trillion, one billion, ten million, nine hundred ninety-nine thousand, nine hundred ninety-nine".