2274221 has 2 divisors, whose sum is σ = 2274222. Its totient is φ = 2274220.

The previous prime is 2274203. The next prime is 2274241. The reversal of 2274221 is 1224722.

It is a happy number.

It is an a-pointer prime, because the next prime (2274241) can be obtained adding 2274221 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2175625 + 98596 = 1475^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 2274221 - 2¹⁴ = 2257837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2274193 and 2274202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2274241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1137110 + 1137111.

It is an arithmetic number, because the mean of its divisors is an integer number (1137111).

2^2274221 is an apocalyptic number.

It is an amenable number.

2274221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2274221 is an equidigital number, since it uses as much as digits as its factorization.

2274221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 20.

The square root of 2274221 is about 1508.0520548045. The cubic root of 2274221 is about 131.5055923446.

Adding to 2274221 its reverse (1224722), we get a palindrome (3498943).

The spelling of 2274221 in words is "two million, two hundred seventy-four thousand, two hundred twenty-one".