6452001221 has 2 divisors, whose sum is σ = 6452001222. Its totient is φ = 6452001220.

The previous prime is 6452001197. The next prime is 6452001223. The reversal of 6452001221 is 1221002546.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3385610596 + 3066390625 = 58186^2 + 55375^2 .

It is a cyclic number.

It is not a de Polignac number, because 6452001221 - 2¹⁰ = 6452000197 is a prime.

Together with 6452001223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6452001223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3226000610 + 3226000611.

It is an arithmetic number, because the mean of its divisors is an integer number (3226000611).

Almost surely, 2^6452001221 is an apocalyptic number.

It is an amenable number.

6452001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6452001221 is an equidigital number, since it uses as much as digits as its factorization.

6452001221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 6452001221 is about 80324.3501125281. The cubic root of 6452001221 is about 1861.6504813744.

Adding to 6452001221 its reverse (1221002546), we get a palindrome (7673003767).

The spelling of 6452001221 in words is "six billion, four hundred fifty-two million, one thousand, two hundred twenty-one".