2112569 has 2 divisors, whose sum is σ = 2112570. Its totient is φ = 2112568.

The previous prime is 2112541. The next prime is 2112571. The reversal of 2112569 is 9652112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795600 + 316969 = 1340^2 + 563^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112569 - 2¹² = 2108473 is a prime.

It is a super-2 number, since 2×2112569² = 8925895559522, which contains 22 as substring.

Together with 2112571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2112169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056284 + 1056285.

It is an arithmetic number, because the mean of its divisors is an integer number (1056285).

2^2112569 is an apocalyptic number.

It is an amenable number.

2112569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112569 is an equidigital number, since it uses as much as digits as its factorization.

2112569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 2112569 is about 1453.4679219026. The cubic root of 2112569 is about 128.3128941794.

The spelling of 2112569 in words is "two million, one hundred twelve thousand, five hundred sixty-nine".