5520100221 has 12 divisors (see below), whose sum is σ = 7993980540. Its totient is φ = 3670604160.

The previous prime is 5520100213. The next prime is 5520100247. The reversal of 5520100221 is 1220010255.

It can be written as a sum of positive squares in 2 ways, for example, as 1754436996 + 3765663225 = 41886^2 + 61365^2 .

It is not a de Polignac number, because 5520100221 - 2³ = 5520100213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5520100194 and 5520100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5520100291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784860 + ... + 791861.

It is an arithmetic number, because the mean of its divisors is an integer number (666165045).

Almost surely, 2^5520100221 is an apocalyptic number.

It is an amenable number.

5520100221 is a deficient number, since it is larger than the sum of its proper divisors (2473880319).

5520100221 is a wasteful number, since it uses less digits than its factorization.

5520100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577116 (or 1577113 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 5520100221 is about 74297.3769456231. The cubic root of 5520100221 is about 1767.3218801705.

Adding to 5520100221 its reverse (1220010255), we get a palindrome (6740110476).

The spelling of 5520100221 in words is "five billion, five hundred twenty million, one hundred thousand, two hundred twenty-one".