2112189943 has 2 divisors, whose sum is σ = 2112189944. Its totient is φ = 2112189942.

The previous prime is 2112189913. The next prime is 2112189949. The reversal of 2112189943 is 3499812112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2112189943 - 2¹³ = 2112181751 is a prime.

It is a super-2 number, since 2×2112189943² = 8922692710620686498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112189896 and 2112189905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112189949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056094971 + 1056094972.

It is an arithmetic number, because the mean of its divisors is an integer number (1056094972).

Almost surely, 2^2112189943 is an apocalyptic number.

2112189943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112189943 is an equidigital number, since it uses as much as digits as its factorization.

2112189943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 2112189943 is about 45958.5676778552. The cubic root of 2112189943 is about 1283.0521935154.

The spelling of 2112189943 in words is "two billion, one hundred twelve million, one hundred eighty-nine thousand, nine hundred forty-three".