1001001099599 has 2 divisors, whose sum is σ = 1001001099600. Its totient is φ = 1001001099598.

The previous prime is 1001001099509. The next prime is 1001001099617. The reversal of 1001001099599 is 9959901001001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001001099599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001001099509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500500549799 + 500500549800.

It is an arithmetic number, because the mean of its divisors is an integer number (500500549800).

Almost surely, 2^{1001001099599} is an apocalyptic number.

1001001099599 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001001099599 is an equidigital number, since it uses as much as digits as its factorization.

1001001099599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32805, while the sum is 44.

The spelling of 1001001099599 in words is "one trillion, one billion, one million, ninety-nine thousand, five hundred ninety-nine".