2212815 has 16 divisors (see below), whose sum is σ = 3862656. Its totient is φ = 1072800.

The previous prime is 2212783. The next prime is 2212817. The reversal of 2212815 is 5182122.

It is a happy number.

It is not a de Polignac number, because 2212815 - 2⁵ = 2212783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212791 and 2212800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6541 + ... + 6870.

It is an arithmetic number, because the mean of its divisors is an integer number (241416).

2^2212815 is an apocalyptic number.

2212815 is a deficient number, since it is larger than the sum of its proper divisors (1649841).

2212815 is a wasteful number, since it uses less digits than its factorization.

2212815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13430.

The product of its digits is 320, while the sum is 21.

The square root of 2212815 is about 1487.5533603875. The cubic root of 2212815 is about 130.3111874397.

Adding to 2212815 its reverse (5182122), we get a palindrome (7394937).

The spelling of 2212815 in words is "two million, two hundred twelve thousand, eight hundred fifteen".