11011109971 has 2 divisors, whose sum is σ = 11011109972. Its totient is φ = 11011109970.

The previous prime is 11011109959. The next prime is 11011110013. The reversal of 11011109971 is 17990111011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11011109971 - 2²⁹ = 10474239059 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011109911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505554985 + 5505554986.

It is an arithmetic number, because the mean of its divisors is an integer number (5505554986).

Almost surely, 2^11011109971 is an apocalyptic number.

11011109971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011109971 is an equidigital number, since it uses as much as digits as its factorization.

11011109971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 31.

The spelling of 11011109971 in words is "eleven billion, eleven million, one hundred nine thousand, nine hundred seventy-one".