111818537227 has 2 divisors, whose sum is σ = 111818537228. Its totient is φ = 111818537226.

The previous prime is 111818537219. The next prime is 111818537231. The reversal of 111818537227 is 722735818111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111818537227 - 2³ = 111818537219 is a prime.

It is a super-5 number, since 5×111818537227⁵ (a number of 56 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (111818537267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55909268613 + 55909268614.

It is an arithmetic number, because the mean of its divisors is an integer number (55909268614).

Almost surely, 2^111818537227 is an apocalyptic number.

111818537227 is a deficient number, since it is larger than the sum of its proper divisors (1).

111818537227 is an equidigital number, since it uses as much as digits as its factorization.

111818537227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 46.

The spelling of 111818537227 in words is "one hundred eleven billion, eight hundred eighteen million, five hundred thirty-seven thousand, two hundred twenty-seven".