1155422223427 has 2 divisors, whose sum is σ = 1155422223428. Its totient is φ = 1155422223426.

The previous prime is 1155422223413. The next prime is 1155422223467. The reversal of 1155422223427 is 7243222245511.

It is an a-pointer prime, because the next prime (1155422223467) can be obtained adding 1155422223427 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1155422223427 - 2²³ = 1155413834819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1155422223427.

It is not a weakly prime, because it can be changed into another prime (1155422223467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577711111713 + 577711111714.

It is an arithmetic number, because the mean of its divisors is an integer number (577711111714).

Almost surely, 2^{1155422223427} is an apocalyptic number.

1155422223427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155422223427 is an equidigital number, since it uses as much as digits as its factorization.

1155422223427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 40.

Adding to 1155422223427 its reverse (7243222245511), we get a palindrome (8398644468938).

The spelling of 1155422223427 in words is "one trillion, one hundred fifty-five billion, four hundred twenty-two million, two hundred twenty-three thousand, four hundred twenty-seven".