111210221027 has 2 divisors, whose sum is σ = 111210221028. Its totient is φ = 111210221026.

The previous prime is 111210220981. The next prime is 111210221033. The reversal of 111210221027 is 720122012111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111210221027 is a prime.

It is not a weakly prime, because it can be changed into another prime (111210221047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605110513 + 55605110514.

It is an arithmetic number, because the mean of its divisors is an integer number (55605110514).

Almost surely, 2^111210221027 is an apocalyptic number.

111210221027 is a deficient number, since it is larger than the sum of its proper divisors (1).

111210221027 is an equidigital number, since it uses as much as digits as its factorization.

111210221027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 111210221027 its reverse (720122012111), we get a palindrome (831332233138).

The spelling of 111210221027 in words is "one hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, twenty-seven".