2112221171 has 2 divisors, whose sum is σ = 2112221172. Its totient is φ = 2112221170.

The previous prime is 2112221159. The next prime is 2112221179. The reversal of 2112221171 is 1711222112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2112221171 - 2⁶ = 2112221107 is a prime.

It is a super-2 number, since 2×2112221171² = 8922956550441222482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112221179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056110585 + 1056110586.

It is an arithmetic number, because the mean of its divisors is an integer number (1056110586).

Almost surely, 2^2112221171 is an apocalyptic number.

2112221171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112221171 is an equidigital number, since it uses as much as digits as its factorization.

2112221171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112, while the sum is 20.

The square root of 2112221171 is about 45958.9074173875. The cubic root of 2112221171 is about 1283.0585166456.

Adding to 2112221171 its reverse (1711222112), we get a palindrome (3823443283).

The spelling of 2112221171 in words is "two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred seventy-one".