2112122112211 has 2 divisors, whose sum is σ = 2112122112212. Its totient is φ = 2112122112210.

The previous prime is 2112122112193. The next prime is 2112122112223. The reversal of 2112122112211 is 1122112212112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2112122112211 - 2⁷ = 2112122112083 is a prime.

It is a super-2 number, since 2×2112122112211² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112122112511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056061056105 + 1056061056106.

It is an arithmetic number, because the mean of its divisors is an integer number (1056061056106).

Almost surely, 2^{2112122112211} is an apocalyptic number.

2112122112211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112122112211 is an equidigital number, since it uses as much as digits as its factorization.

2112122112211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 19.

Adding to 2112122112211 its reverse (1122112212112), we get a palindrome (3234234324323).

Subtracting from 2112122112211 its reverse (1122112212112), we obtain a palindrome (990009900099).

The spelling of 2112122112211 in words is "two trillion, one hundred twelve billion, one hundred twenty-two million, one hundred twelve thousand, two hundred eleven".