2112209989 has 2 divisors, whose sum is σ = 2112209990. Its totient is φ = 2112209988.

The previous prime is 2112209977. The next prime is 2112210011. The reversal of 2112209989 is 9899022112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2009997889 + 102212100 = 44833^2 + 10110^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112209989 - 2²³ = 2103821381 is a prime.

It is a super-2 number, since 2×2112209989² = 8922862075262760242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112209089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056104994 + 1056104995.

It is an arithmetic number, because the mean of its divisors is an integer number (1056104995).

Almost surely, 2^2112209989 is an apocalyptic number.

It is an amenable number.

2112209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112209989 is an equidigital number, since it uses as much as digits as its factorization.

2112209989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 2112209989 is about 45958.7857650743. The cubic root of 2112209989 is about 1283.0562524911.

The spelling of 2112209989 in words is "two billion, one hundred twelve million, two hundred nine thousand, nine hundred eighty-nine".