11115250827209 has 2 divisors, whose sum is σ = 11115250827210. Its totient is φ = 11115250827208.

The previous prime is 11115250827137. The next prime is 11115250827251. The reversal of 11115250827209 is 90272805251111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7343032298809 + 3772218528400 = 2709803^2 + 1942220^2 .

It is a cyclic number.

It is not a de Polignac number, because 11115250827209 - 2¹² = 11115250823113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11115250827209.

It is not a weakly prime, because it can be changed into another prime (11115250727209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557625413604 + 5557625413605.

It is an arithmetic number, because the mean of its divisors is an integer number (5557625413605).

Almost surely, 2^{11115250827209} is an apocalyptic number.

It is an amenable number.

11115250827209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115250827209 is an equidigital number, since it uses as much as digits as its factorization.

11115250827209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 44.

The spelling of 11115250827209 in words is "eleven trillion, one hundred fifteen billion, two hundred fifty million, eight hundred twenty-seven thousand, two hundred nine".