1100101000991 has 2 divisors, whose sum is σ = 1100101000992. Its totient is φ = 1100101000990.

The previous prime is 1100101000967. The next prime is 1100101001003. The reversal of 1100101000991 is 1990001010011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100101000991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100101008991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550050500495 + 550050500496.

It is an arithmetic number, because the mean of its divisors is an integer number (550050500496).

Almost surely, 2^{1100101000991} is an apocalyptic number.

1100101000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100101000991 is an equidigital number, since it uses as much as digits as its factorization.

1100101000991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 1100101000991 in words is "one trillion, one hundred billion, one hundred one million, nine hundred ninety-one", and thus it is an aban number.