111222221017 has 2 divisors, whose sum is σ = 111222221018. Its totient is φ = 111222221016.

The previous prime is 111222220987. The next prime is 111222221021. The reversal of 111222221017 is 710122222111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111184901136 + 37319881 = 333444^2 + 6109^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222221017 - 2¹¹ = 111222218969 is a prime.

It is not a weakly prime, because it can be changed into another prime (111222221027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611110508 + 55611110509.

It is an arithmetic number, because the mean of its divisors is an integer number (55611110509).

Almost surely, 2^111222221017 is an apocalyptic number.

It is an amenable number.

111222221017 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222221017 is an equidigital number, since it uses as much as digits as its factorization.

111222221017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 111222221017 its reverse (710122222111), we get a palindrome (821344443128).

The spelling of 111222221017 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, seventeen".