11011001109997 has 4 divisors (see below), whose sum is σ = 12584001268576. Its totient is φ = 9438000951420.

The previous prime is 11011001109991. The next prime is 11011001110013. The reversal of 11011001109997 is 79990110011011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011001109997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011001109991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786500079279 + ... + 786500079292.

It is an arithmetic number, because the mean of its divisors is an integer number (3146000317144).

Almost surely, 2^{11011001109997} is an apocalyptic number.

It is an amenable number.

11011001109997 is a deficient number, since it is larger than the sum of its proper divisors (1573000158579).

11011001109997 is an equidigital number, since it uses as much as digits as its factorization.

11011001109997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573000158578.

The product of its (nonzero) digits is 5103, while the sum is 40.

The spelling of 11011001109997 in words is "eleven trillion, eleven billion, one million, one hundred nine thousand, nine hundred ninety-seven".