11000001001091 has 2 divisors, whose sum is σ = 11000001001092. Its totient is φ = 11000001001090.

The previous prime is 11000001001081. The next prime is 11000001001103. The reversal of 11000001001091 is 19010010000011.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19010010000011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11000001001091 - 2²² = 10999996806787 is a prime.

It is not a weakly prime, because it can be changed into another prime (11000001001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500000500545 + 5500000500546.

It is an arithmetic number, because the mean of its divisors is an integer number (5500000500546).

Almost surely, 2^{11000001001091} is an apocalyptic number.

11000001001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000001001091 is an equidigital number, since it uses as much as digits as its factorization.

11000001001091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

The spelling of 11000001001091 in words is "eleven trillion, one million, one thousand, ninety-one".