111222121147 has 2 divisors, whose sum is σ = 111222121148. Its totient is φ = 111222121146.

The previous prime is 111222121139. The next prime is 111222121159. The reversal of 111222121147 is 741121222111.

It is a weak prime.

It is an emirp because it is prime and its reverse (741121222111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111222121147 - 2³ = 111222121139 is a prime.

It is not a weakly prime, because it can be changed into another prime (111222121187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611060573 + 55611060574.

It is an arithmetic number, because the mean of its divisors is an integer number (55611060574).

Almost surely, 2^111222121147 is an apocalyptic number.

111222121147 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222121147 is an equidigital number, since it uses as much as digits as its factorization.

111222121147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 25.

Adding to 111222121147 its reverse (741121222111), we get a palindrome (852343343258).

The spelling of 111222121147 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred forty-seven".