5122221 has 12 divisors (see below), whose sum is σ = 7396128. Its totient is φ = 3151824.

The previous prime is 5122213. The next prime is 5122259. The reversal of 5122221 is 1222215.

It is not a de Polignac number, because 5122221 - 2³ = 5122213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5122211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4545 + ... + 5558.

It is an arithmetic number, because the mean of its divisors is an integer number (616344).

Almost surely, 2^5122221 is an apocalyptic number.

It is an amenable number.

5122221 is a deficient number, since it is larger than the sum of its proper divisors (2273907).

5122221 is a wasteful number, since it uses less digits than its factorization.

5122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132 (or 10119 counting only the distinct ones).

The product of its digits is 80, while the sum is 15.

The square root of 5122221 is about 2263.2324228855. The cubic root of 5122221 is about 172.3796934719.

Adding to 5122221 its reverse (1222215), we get a palindrome (6344436).

The spelling of 5122221 in words is "five million, one hundred twenty-two thousand, two hundred twenty-one".