111222310211 has 2 divisors, whose sum is σ = 111222310212. Its totient is φ = 111222310210.

The previous prime is 111222310189. The next prime is 111222310247. The reversal of 111222310211 is 112013222111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111222310211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111222310211.

It is not a weakly prime, because it can be changed into another prime (111222310411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611155105 + 55611155106.

It is an arithmetic number, because the mean of its divisors is an integer number (55611155106).

Almost surely, 2^111222310211 is an apocalyptic number.

111222310211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222310211 is an equidigital number, since it uses as much as digits as its factorization.

111222310211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111222310211 its reverse (112013222111), we get a palindrome (223235532322).

The spelling of 111222310211 in words is "one hundred eleven billion, two hundred twenty-two million, three hundred ten thousand, two hundred eleven".