11155122227 has 2 divisors, whose sum is σ = 11155122228. Its totient is φ = 11155122226.

The previous prime is 11155122197. The next prime is 11155122233. The reversal of 11155122227 is 72222155111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11155122227 - 2⁶ = 11155122163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11155122227.

It is not a weakly prime, because it can be changed into another prime (11155122247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577561113 + 5577561114.

It is an arithmetic number, because the mean of its divisors is an integer number (5577561114).

Almost surely, 2^11155122227 is an apocalyptic number.

11155122227 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155122227 is an equidigital number, since it uses as much as digits as its factorization.

11155122227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 29.

Adding to 11155122227 its reverse (72222155111), we get a palindrome (83377277338).

The spelling of 11155122227 in words is "eleven billion, one hundred fifty-five million, one hundred twenty-two thousand, two hundred twenty-seven".