2221015 has 8 divisors (see below), whose sum is σ = 2689488. Its totient is φ = 1760640.

The previous prime is 2221007. The next prime is 2221019. The reversal of 2221015 is 5101222.

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

It is not a de Polignac number, because 2221015 - 2³ = 2221007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220986 and 2221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221019) 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 7 ways as a sum of consecutive naturals, for example, 1401 + ... + 2530.

It is an arithmetic number, because the mean of its divisors is an integer number (336186).

2^2221015 is an apocalyptic number.

2221015 is a deficient number, since it is larger than the sum of its proper divisors (468473).

2221015 is a wasteful number, since it uses less digits than its factorization.

2221015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2221015 is about 1490.3070153495. The cubic root of 2221015 is about 130.4719531825.

Adding to 2221015 its reverse (5101222), we get a palindrome (7322237).

The spelling of 2221015 in words is "two million, two hundred twenty-one thousand, fifteen".