56700247221 has 12 divisors (see below), whose sum is σ = 82011192640. Its totient is φ = 37749009960.

The previous prime is 56700247217. The next prime is 56700247229. The reversal of 56700247221 is 12274200765.

It is a happy number.

56700247221 is a `hidden beast` number, since 567 + 0 + 0 + 2 + 4 + 72 + 21 = 666.

It is not a de Polignac number, because 56700247221 - 2² = 56700247217 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 (56700247229) 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 11 ways as a sum of consecutive naturals, for example, 4255885 + ... + 4269186.

Almost surely, 2^56700247221 is an apocalyptic number.

It is an amenable number.

56700247221 is a deficient number, since it is larger than the sum of its proper divisors (25310945419).

56700247221 is a wasteful number, since it uses less digits than its factorization.

56700247221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525816 (or 8525813 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

Adding to 56700247221 its reverse (12274200765), we get a palindrome (68974447986).

The spelling of 56700247221 in words is "fifty-six billion, seven hundred million, two hundred forty-seven thousand, two hundred twenty-one".