2212657 has 2 divisors, whose sum is σ = 2212658. Its totient is φ = 2212656.

The previous prime is 2212633. The next prime is 2212663. The reversal of 2212657 is 7562122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1648656 + 564001 = 1284^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212657 - 2¹⁹ = 1688369 is a prime.

It is the 1488-th Hogben number.

2212657 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2212627) by changing a digit.

It is a nontrivial repunit in base 1487.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106328 + 1106329.

It is an arithmetic number, because the mean of its divisors is an integer number (1106329).

2^2212657 is an apocalyptic number.

It is an amenable number.

2212657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212657 is an equidigital number, since it uses as much as digits as its factorization.

2212657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 2212657 is about 1487.5002521008. The cubic root of 2212657 is about 130.3080858613.

Adding to 2212657 its reverse (7562122), we get a palindrome (9774779).

The spelling of 2212657 in words is "two million, two hundred twelve thousand, six hundred fifty-seven".