2290221 has 16 divisors (see below), whose sum is σ = 3416320. Its totient is φ = 1516320.

The previous prime is 2290213. The next prime is 2290231. The reversal of 2290221 is 1220922.

2290221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2290221 - 2³ = 2290213 is a prime.

It is a super-2 number, since 2×2290221² = 10490224457682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2290194 and 2290203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2290231) 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 15 ways as a sum of consecutive naturals, for example, 7161 + ... + 7473.

It is an arithmetic number, because the mean of its divisors is an integer number (213520).

2^2290221 is an apocalyptic number.

It is an amenable number.

2290221 is a deficient number, since it is larger than the sum of its proper divisors (1126099).

2290221 is a wasteful number, since it uses less digits than its factorization.

2290221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2290221 is about 1513.3476137359. The cubic root of 2290221 is about 131.8132690274.

The spelling of 2290221 in words is "two million, two hundred ninety thousand, two hundred twenty-one".