4556652221221 has 4 divisors (see below), whose sum is σ = 4571210215852. Its totient is φ = 4542094226592.

The previous prime is 4556652221203. The next prime is 4556652221257. The reversal of 4556652221221 is 1221222566554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2328633272196 + 2228018949025 = 1525986^2 + 1492655^2 .

It is a cyclic number.

It is not a de Polignac number, because 4556652221221 - 2⁵ = 4556652221189 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 (4556652201221) 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 3 ways as a sum of consecutive naturals, for example, 7278996846 + ... + 7278997471.

It is an arithmetic number, because the mean of its divisors is an integer number (1142802553963).

Almost surely, 2^{4556652221221} is an apocalyptic number.

It is an amenable number.

4556652221221 is a deficient number, since it is larger than the sum of its proper divisors (14557994631).

4556652221221 is a wasteful number, since it uses less digits than its factorization.

4556652221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14557994630.

The product of its digits is 576000, while the sum is 43.

Adding to 4556652221221 its reverse (1221222566554), we get a palindrome (5777874787775).

The spelling of 4556652221221 in words is "four trillion, five hundred fifty-six billion, six hundred fifty-two million, two hundred twenty-one thousand, two hundred twenty-one".