6321275221 has 8 divisors (see below), whose sum is σ = 6348196800. Its totient is φ = 6294376032.

The previous prime is 6321275159. The next prime is 6321275237. The reversal of 6321275221 is 1225721236.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6321275221 - 2⁹ = 6321274709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6321275251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797946 + ... + 805828.

It is an arithmetic number, because the mean of its divisors is an integer number (793524600).

Almost surely, 2^6321275221 is an apocalyptic number.

It is an amenable number.

6321275221 is a deficient number, since it is larger than the sum of its proper divisors (26921579).

6321275221 is a wasteful number, since it uses less digits than its factorization.

6321275221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11195.

The product of its digits is 10080, while the sum is 31.

The square root of 6321275221 is about 79506.4476693557. The cubic root of 6321275221 is about 1848.9914367243.

Adding to 6321275221 its reverse (1225721236), we get a palindrome (7546996457).

The spelling of 6321275221 in words is "six billion, three hundred twenty-one million, two hundred seventy-five thousand, two hundred twenty-one".