2252221 has 2 divisors, whose sum is σ = 2252222. Its totient is φ = 2252220.

The previous prime is 2252219. The next prime is 2252231. The reversal of 2252221 is 1222522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1726596 + 525625 = 1314^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 2252221 - 2¹ = 2252219 is a prime.

Together with 2252219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2252195 and 2252204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2252231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126110 + 1126111.

It is an arithmetic number, because the mean of its divisors is an integer number (1126111).

2^2252221 is an apocalyptic number.

It is an amenable number.

2252221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2252221 is an equidigital number, since it uses as much as digits as its factorization.

2252221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160, while the sum is 16.

The square root of 2252221 is about 1500.7401507256. The cubic root of 2252221 is about 131.0801715806.

Adding to 2252221 its reverse (1222522), we get a palindrome (3474743).

The spelling of 2252221 in words is "two million, two hundred fifty-two thousand, two hundred twenty-one".