11112009971 has 2 divisors, whose sum is σ = 11112009972. Its totient is φ = 11112009970.

The previous prime is 11112009967. The next prime is 11112010031. The reversal of 11112009971 is 17990021111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11112009971 - 2² = 11112009967 is a prime.

It is not a weakly prime, because it can be changed into another prime (11112009911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556004985 + 5556004986.

It is an arithmetic number, because the mean of its divisors is an integer number (5556004986).

Almost surely, 2^11112009971 is an apocalyptic number.

11112009971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112009971 is an equidigital number, since it uses as much as digits as its factorization.

11112009971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 32.

The spelling of 11112009971 in words is "eleven billion, one hundred twelve million, nine thousand, nine hundred seventy-one".