111010211212211 has 2 divisors, whose sum is σ = 111010211212212. Its totient is φ = 111010211212210.

The previous prime is 111010211212139. The next prime is 111010211212217. The reversal of 111010211212211 is 112212112010111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111010211212211 - 2³⁴ = 110993031343027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111010211212211.

It is not a weakly prime, because it can be changed into another prime (111010211212217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505105606105 + 55505105606106.

It is an arithmetic number, because the mean of its divisors is an integer number (55505105606106).

Almost surely, 2^{111010211212211} is an apocalyptic number.

111010211212211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010211212211 is an equidigital number, since it uses as much as digits as its factorization.

111010211212211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111010211212211 its reverse (112212112010111), we get a palindrome (223222323222322).

The spelling of 111010211212211 in words is "one hundred eleven trillion, ten billion, two hundred eleven million, two hundred twelve thousand, two hundred eleven".