2122306 has 8 divisors (see below), whose sum is σ = 3196620. Its totient is φ = 1056768.

The previous prime is 2122303. The next prime is 2122321. The reversal of 2122306 is 6032212.

2122306 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 2 ways, for example, as 1863225 + 259081 = 1365^2 + 509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2122306.

It is not an unprimeable number, because it can be changed into a prime (2122303) 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, 1551 + ... + 2578.

2^2122306 is an apocalyptic number.

2122306 is a deficient number, since it is larger than the sum of its proper divisors (1074314).

2122306 is a wasteful number, since it uses less digits than its factorization.

2122306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2122306 is about 1456.8136462842. The cubic root of 2122306 is about 128.5097268902.

Adding to 2122306 its reverse (6032212), we get a palindrome (8154518).

The spelling of 2122306 in words is "two million, one hundred twenty-two thousand, three hundred six".