2272222 has 4 divisors (see below), whose sum is σ = 3408336. Its totient is φ = 1136110.

The previous prime is 2272219. The next prime is 2272223. The reversal of 2272222 is 2222722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2222722 = 2 ⋅1111361.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 2272222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272223) 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, 568054 + ... + 568057.

It is an arithmetic number, because the mean of its divisors is an integer number (852084).

2^2272222 is an apocalyptic number.

2272222 is a deficient number, since it is larger than the sum of its proper divisors (1136114).

2272222 is a wasteful number, since it uses less digits than its factorization.

2272222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136113.

The product of its digits is 448, while the sum is 19.

The square root of 2272222 is about 1507.3891335684. The cubic root of 2272222 is about 131.4670506873.

Adding to 2272222 its reverse (2222722), we get a palindrome (4494944).

The spelling of 2272222 in words is "two million, two hundred seventy-two thousand, two hundred twenty-two".