6400221333 has 8 divisors (see below), whose sum is σ = 9309412896. Its totient is φ = 3878922000.

The previous prime is 6400221299. The next prime is 6400221349. The reversal of 6400221333 is 3331220046.

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

It is not a de Polignac number, because 6400221333 - 2¹⁷ = 6400090261 is a prime.

It is a super-2 number, since 2×6400221333² = 81925666222776593778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400221533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96973018 + ... + 96973083.

It is an arithmetic number, because the mean of its divisors is an integer number (1163676612).

Almost surely, 2^6400221333 is an apocalyptic number.

It is an amenable number.

6400221333 is a deficient number, since it is larger than the sum of its proper divisors (2909191563).

6400221333 is a wasteful number, since it uses less digits than its factorization.

6400221333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193946115.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 6400221333 is about 80001.3833192902. The cubic root of 6400221333 is about 1856.6569360480.

Adding to 6400221333 its reverse (3331220046), we get a palindrome (9731441379).

The spelling of 6400221333 in words is "six billion, four hundred million, two hundred twenty-one thousand, three hundred thirty-three".