5221002112221 has 64 divisors (see below), whose sum is σ = 8157379608576. Its totient is φ = 2908813420800.

The previous prime is 5221002112213. The next prime is 5221002112229. The reversal of 5221002112221 is 1222112001225.

5221002112221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5221002112213) and next prime (5221002112229).

It is not a de Polignac number, because 5221002112221 - 2³ = 5221002112213 is a prime.

It is a super-2 number, since 2×5221002112221² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221002112229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68350576 + ... + 68426918.

It is an arithmetic number, because the mean of its divisors is an integer number (127459056384).

Almost surely, 2^{5221002112221} is an apocalyptic number.

It is an amenable number.

5221002112221 is a deficient number, since it is larger than the sum of its proper divisors (2936377496355).

5221002112221 is a wasteful number, since it uses less digits than its factorization.

5221002112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76882.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 5221002112221 its reverse (1222112001225), we get a palindrome (6443114113446).

The spelling of 5221002112221 in words is "five trillion, two hundred twenty-one billion, two million, one hundred twelve thousand, two hundred twenty-one".