111111100157 has 2 divisors, whose sum is σ = 111111100158. Its totient is φ = 111111100156.

The previous prime is 111111100109. The next prime is 111111100181. The reversal of 111111100157 is 751001111111.

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., 98538860281 + 12572239876 = 313909^2 + 112126^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111100157 - 2¹⁴ = 111111083773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111100357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555550078 + 55555550079.

It is an arithmetic number, because the mean of its divisors is an integer number (55555550079).

Almost surely, 2^111111100157 is an apocalyptic number.

It is an amenable number.

111111100157 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111100157 is an equidigital number, since it uses as much as digits as its factorization.

111111100157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35, while the sum is 20.

Adding to 111111100157 its reverse (751001111111), we get a palindrome (862112211268).

The spelling of 111111100157 in words is "one hundred eleven billion, one hundred eleven million, one hundred thousand, one hundred fifty-seven".