5568721221 has 8 divisors (see below), whose sum is σ = 8485670464. Its totient is φ = 3182126400.

The previous prime is 5568721211. The next prime is 5568721231. The reversal of 5568721221 is 1221278655.

It is an interprime number because it is at equal distance from previous prime (5568721211) and next prime (5568721231).

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

It is not a de Polignac number, because 5568721221 - 2¹⁰ = 5568720197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5568721221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5568721211) 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, 132588580 + ... + 132588621.

It is an arithmetic number, because the mean of its divisors is an integer number (1060708808).

Almost surely, 2^5568721221 is an apocalyptic number.

It is an amenable number.

5568721221 is a deficient number, since it is larger than the sum of its proper divisors (2916949243).

5568721221 is a wasteful number, since it uses less digits than its factorization.

5568721221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265177211.

The product of its digits is 67200, while the sum is 39.

The square root of 5568721221 is about 74623.8649561921. The cubic root of 5568721221 is about 1772.4955723035.

Adding to 5568721221 its reverse (1221278655), we get a palindrome (6789999876).

The spelling of 5568721221 in words is "five billion, five hundred sixty-eight million, seven hundred twenty-one thousand, two hundred twenty-one".