11109990271 has 2 divisors, whose sum is σ = 11109990272. Its totient is φ = 11109990270.

The previous prime is 11109990217. The next prime is 11109990323. The reversal of 11109990271 is 17209990111.

Together with previous prime (11109990217) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11109990271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11109990071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5554995135 + 5554995136.

It is an arithmetic number, because the mean of its divisors is an integer number (5554995136).

Almost surely, 2^11109990271 is an apocalyptic number.

11109990271 is a deficient number, since it is larger than the sum of its proper divisors (1).

11109990271 is an equidigital number, since it uses as much as digits as its factorization.

11109990271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 40.

The spelling of 11109990271 in words is "eleven billion, one hundred nine million, nine hundred ninety thousand, two hundred seventy-one".