2217122 has 4 divisors (see below), whose sum is σ = 3325686. Its totient is φ = 1108560.

The previous prime is 2217113. The next prime is 2217143.

2217122 is nontrivially palindromic in base 10.

It is a Cunningham number, because it is equal to 1489²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 2217121 + 1 = 1489^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2217122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554279 + ... + 554282.

2^2217122 is an apocalyptic number.

2217122 is a deficient number, since it is larger than the sum of its proper divisors (1108564).

2217122 is a wasteful number, since it uses less digits than its factorization.

2217122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108563.

The product of its digits is 112, while the sum is 17.

The square root of 2217122 is about 1489.0003357958. Note that the first 3 decimals coincide. The cubic root of 2217122 is about 130.3956780908.

The spelling of 2217122 in words is "two million, two hundred seventeen thousand, one hundred twenty-two".