2211215 has 4 divisors (see below), whose sum is σ = 2653464. Its totient is φ = 1768968.

The previous prime is 2211211. The next prime is 2211217. The reversal of 2211215 is 5121122.

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

It is a cyclic number.

It is not a de Polignac number, because 2211215 - 2² = 2211211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2211215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211211) 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 in 3 ways as a sum of consecutive naturals, for example, 221117 + ... + 221126.

It is an arithmetic number, because the mean of its divisors is an integer number (663366).

2^2211215 is an apocalyptic number.

2211215 is a deficient number, since it is larger than the sum of its proper divisors (442249).

2211215 is an equidigital number, since it uses as much as digits as its factorization.

2211215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442248.

The product of its digits is 40, while the sum is 14.

The square root of 2211215 is about 1487.0154673036. The cubic root of 2211215 is about 130.2797722254.

Adding to 2211215 its reverse (5121122), we get a palindrome (7332337).

The spelling of 2211215 in words is "two million, two hundred eleven thousand, two hundred fifteen".