1001101099991 has 2 divisors, whose sum is σ = 1001101099992. Its totient is φ = 1001101099990.

The previous prime is 1001101099969. The next prime is 1001101100011. The reversal of 1001101099991 is 1999901011001.

It is a happy number.

1001101099991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (1999901011001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001101099991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001101099391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500550549995 + 500550549996.

It is an arithmetic number, because the mean of its divisors is an integer number (500550549996).

Almost surely, 2^{1001101099991} is an apocalyptic number.

1001101099991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001101099991 is an equidigital number, since it uses as much as digits as its factorization.

1001101099991 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 1001101099991 in words is "one trillion, one billion, one hundred one million, ninety-nine thousand, nine hundred ninety-one".