1222601 has 2 divisors, whose sum is σ = 1222602. Its totient is φ = 1222600.

The previous prime is 1222597. The next prime is 1222603. The reversal of 1222601 is 1062221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 765625 + 456976 = 875^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222601 - 2² = 1222597 is a prime.

It is a Sophie Germain prime.

Together with 1222603, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611300 + 611301.

It is an arithmetic number, because the mean of its divisors is an integer number (611301).

2^1222601 is an apocalyptic number.

It is an amenable number.

1222601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222601 is an equidigital number, since it uses as much as digits as its factorization.

1222601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1222601 is about 1105.7128922103. The cubic root of 1222601 is about 106.9288547930.

Adding to 1222601 its reverse (1062221), we get a palindrome (2284822).

The spelling of 1222601 in words is "one million, two hundred twenty-two thousand, six hundred one".