2112242309 has 2 divisors, whose sum is σ = 2112242310. Its totient is φ = 2112242308.

The previous prime is 2112242281. The next prime is 2112242357. The reversal of 2112242309 is 9032422112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1323868225 + 788374084 = 36385^2 + 28078^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112242309 - 2¹² = 2112238213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112242359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056121154 + 1056121155.

It is an arithmetic number, because the mean of its divisors is an integer number (1056121155).

Almost surely, 2^2112242309 is an apocalyptic number.

It is an amenable number.

2112242309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112242309 is an equidigital number, since it uses as much as digits as its factorization.

2112242309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2112242309 is about 45959.1373831146. The cubic root of 2112242309 is about 1283.0627966899.

The spelling of 2112242309 in words is "two billion, one hundred twelve million, two hundred forty-two thousand, three hundred nine".