12021017 has 2 divisors, whose sum is σ = 12021018. Its totient is φ = 12021016.

The previous prime is 12021013. The next prime is 12021029. The reversal of 12021017 is 71012021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10916416 + 1104601 = 3304^2 + 1051^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021017 - 2² = 12021013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020992 and 12021010.

It is not a weakly prime, because it can be changed into another prime (12021013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010508 + 6010509.

It is an arithmetic number, because the mean of its divisors is an integer number (6010509).

Almost surely, 2^12021017 is an apocalyptic number.

It is an amenable number.

12021017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021017 is an equidigital number, since it uses as much as digits as its factorization.

12021017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 12021017 is about 3467.1338307022. The cubic root of 12021017 is about 229.0764286630.

Adding to 12021017 its reverse (71012021), we get a palindrome (83033038).

The spelling of 12021017 in words is "twelve million, twenty-one thousand, seventeen".