111220011220211 has 2 divisors, whose sum is σ = 111220011220212. Its totient is φ = 111220011220210.

The previous prime is 111220011220183. The next prime is 111220011220217. The reversal of 111220011220211 is 112022110022111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111220011220211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111220011220211.

It is not a weakly prime, because it can be changed into another prime (111220011220217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610005610105 + 55610005610106.

It is an arithmetic number, because the mean of its divisors is an integer number (55610005610106).

Almost surely, 2^{111220011220211} is an apocalyptic number.

111220011220211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220011220211 is an equidigital number, since it uses as much as digits as its factorization.

111220011220211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111220011220211 its reverse (112022110022111), we get a palindrome (223242121242322).

The spelling of 111220011220211 in words is "one hundred eleven trillion, two hundred twenty billion, eleven million, two hundred twenty thousand, two hundred eleven".