2292221 has 2 divisors, whose sum is σ = 2292222. Its totient is φ = 2292220.

The previous prime is 2292193. The next prime is 2292239. The reversal of 2292221 is 1222922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2292196 + 25 = 1514^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 2292221 - 2¹⁰ = 2291197 is a prime.

It is a super-2 number, since 2×2292221² = 10508554225682, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2292193 and 2292202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2294221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1146110 + 1146111.

It is an arithmetic number, because the mean of its divisors is an integer number (1146111).

2^2292221 is an apocalyptic number.

It is an amenable number.

2292221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2292221 is an equidigital number, since it uses as much as digits as its factorization.

2292221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 2292221 is about 1514.0082562523. The cubic root of 2292221 is about 131.8516277470.

The spelling of 2292221 in words is "two million, two hundred ninety-two thousand, two hundred twenty-one".