11122012157 has 2 divisors, whose sum is σ = 11122012158. Its totient is φ = 11122012156.

The previous prime is 11122012141. The next prime is 11122012177. The reversal of 11122012157 is 75121022111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8058832441 + 3063179716 = 89771^2 + 55346^2 .

It is an emirp because it is prime and its reverse (75121022111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11122012157 - 2⁴ = 11122012141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122012177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561006078 + 5561006079.

It is an arithmetic number, because the mean of its divisors is an integer number (5561006079).

Almost surely, 2^11122012157 is an apocalyptic number.

It is an amenable number.

11122012157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122012157 is an equidigital number, since it uses as much as digits as its factorization.

11122012157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 11122012157 its reverse (75121022111), we get a palindrome (86243034268).

The spelling of 11122012157 in words is "eleven billion, one hundred twenty-two million, twelve thousand, one hundred fifty-seven".