12020917 has 2 divisors, whose sum is σ = 12020918. Its totient is φ = 12020916.

The previous prime is 12020909. The next prime is 12020929. The reversal of 12020917 is 71902021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11895601 + 125316 = 3449^2 + 354^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020917 - 2³ = 12020909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12020947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010458 + 6010459.

It is an arithmetic number, because the mean of its divisors is an integer number (6010459).

Almost surely, 2^12020917 is an apocalyptic number.

It is an amenable number.

12020917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020917 is an equidigital number, since it uses as much as digits as its factorization.

12020917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 12020917 is about 3467.1194095387. The cubic root of 12020917 is about 229.0757934504.

Adding to 12020917 its reverse (71902021), we get a palindrome (83922938).

The spelling of 12020917 in words is "twelve million, twenty thousand, nine hundred seventeen".