1001110099991 has 2 divisors, whose sum is σ = 1001110099992. Its totient is φ = 1001110099990.

The previous prime is 1001110099907. The next prime is 1001110100009. The reversal of 1001110099991 is 1999900111001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001110099991 - 2²² = 1001105905687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001110099901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500555049995 + 500555049996.

It is an arithmetic number, because the mean of its divisors is an integer number (500555049996).

Almost surely, 2^{1001110099991} is an apocalyptic number.

1001110099991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001110099991 is an equidigital number, since it uses as much as digits as its factorization.

1001110099991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 1001110099991 in words is "one trillion, one billion, one hundred ten million, ninety-nine thousand, nine hundred ninety-one".