2262221 has 4 divisors (see below), whose sum is σ = 2436252. Its totient is φ = 2088192.

The previous prime is 2262209. The next prime is 2262223. The reversal of 2262221 is 1222622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1406596 + 855625 = 1186^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 2262221 - 2¹⁰ = 2261197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2262221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2262223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86996 + ... + 87021.

It is an arithmetic number, because the mean of its divisors is an integer number (609063).

2^2262221 is an apocalyptic number.

It is an amenable number.

2262221 is a deficient number, since it is larger than the sum of its proper divisors (174031).

2262221 is a wasteful number, since it uses less digits than its factorization.

2262221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174030.

The product of its digits is 192, while the sum is 17.

The square root of 2262221 is about 1504.0681500517. The cubic root of 2262221 is about 131.2738865067.

Adding to 2262221 its reverse (1222622), we get a palindrome (3484843).

The spelling of 2262221 in words is "two million, two hundred sixty-two thousand, two hundred twenty-one".