1001911101091 has 6 divisors (see below), whose sum is σ = 1064313868940. Its totient is φ = 942975153696.

The previous prime is 1001911101041. The next prime is 1001911101097. The reversal of 1001911101091 is 1901011191001.

It is a de Polignac number, because none of the positive numbers 2^k-1001911101091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001911101097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1733409921 + ... + 1733410498.

Almost surely, 2^{1001911101091} is an apocalyptic number.

1001911101091 is a deficient number, since it is larger than the sum of its proper divisors (62402767849).

1001911101091 is an equidigital number, since it uses as much as digits as its factorization.

1001911101091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466820453 (or 3466820436 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 25.

Adding to 1001911101091 its reverse (1901011191001), we get a palindrome (2902922292092).

The spelling of 1001911101091 in words is "one trillion, one billion, nine hundred eleven million, one hundred one thousand, ninety-one".