11115212071 has 2 divisors, whose sum is σ = 11115212072. Its totient is φ = 11115212070.

The previous prime is 11115212033. The next prime is 11115212077. The reversal of 11115212071 is 17021251111.

It is a strong prime.

It is an emirp because it is prime and its reverse (17021251111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11115212071 - 2⁹ = 11115211559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11115212077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557606035 + 5557606036.

It is an arithmetic number, because the mean of its divisors is an integer number (5557606036).

Almost surely, 2^11115212071 is an apocalyptic number.

11115212071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115212071 is an equidigital number, since it uses as much as digits as its factorization.

11115212071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 22.

Adding to 11115212071 its reverse (17021251111), we get a palindrome (28136463182).

The spelling of 11115212071 in words is "eleven billion, one hundred fifteen million, two hundred twelve thousand, seventy-one".