111122223211 has 2 divisors, whose sum is σ = 111122223212. Its totient is φ = 111122223210.

The previous prime is 111122223181. The next prime is 111122223313. The reversal of 111122223211 is 112322221111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111122223211 - 2²¹ = 111120126059 is a prime.

It is not a weakly prime, because it can be changed into another prime (111122220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561111605 + 55561111606.

It is an arithmetic number, because the mean of its divisors is an integer number (55561111606).

Almost surely, 2^111122223211 is an apocalyptic number.

111122223211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122223211 is an equidigital number, since it uses as much as digits as its factorization.

111122223211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 19.

Adding to 111122223211 its reverse (112322221111), we get a palindrome (223444444322).

The spelling of 111122223211 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twenty-three thousand, two hundred eleven".