111122023157 has 2 divisors, whose sum is σ = 111122023158. Its totient is φ = 111122023156.

The previous prime is 111122023093. The next prime is 111122023169. The reversal of 111122023157 is 751320221111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90604612036 + 20517411121 = 301006^2 + 143239^2 .

It is a cyclic number.

It is not a de Polignac number, because 111122023157 - 2⁶ = 111122023093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111122023657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561011578 + 55561011579.

It is an arithmetic number, because the mean of its divisors is an integer number (55561011579).

Almost surely, 2^111122023157 is an apocalyptic number.

It is an amenable number.

111122023157 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122023157 is an equidigital number, since it uses as much as digits as its factorization.

111122023157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 26.

Adding to 111122023157 its reverse (751320221111), we get a palindrome (862442244268).

The spelling of 111122023157 in words is "one hundred eleven billion, one hundred twenty-two million, twenty-three thousand, one hundred fifty-seven".