111412157 has 2 divisors, whose sum is σ = 111412158. Its totient is φ = 111412156.

The previous prime is 111412121. The next prime is 111412159. The reversal of 111412157 is 751214111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70375321 + 41036836 = 8389^2 + 6406^2 .

It is a cyclic number.

It is not a de Polignac number, because 111412157 - 2⁸ = 111411901 is a prime.

Together with 111412159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111412159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55706078 + 55706079.

It is an arithmetic number, because the mean of its divisors is an integer number (55706079).

Almost surely, 2^111412157 is an apocalyptic number.

It is an amenable number.

111412157 is a deficient number, since it is larger than the sum of its proper divisors (1).

111412157 is an equidigital number, since it uses as much as digits as its factorization.

111412157 is an odious number, because the sum of its binary digits is odd.

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

The square root of 111412157 is about 10555.1957348028. The cubic root of 111412157 is about 481.1836485349.

Adding to 111412157 its reverse (751214111), we get a palindrome (862626268).

The spelling of 111412157 in words is "one hundred eleven million, four hundred twelve thousand, one hundred fifty-seven".