22220215 has 16 divisors (see below), whose sum is σ = 28494720. Its totient is φ = 16584480.

The previous prime is 22220213. The next prime is 22220227. The reversal of 22220215 is 51202222.

It is not a de Polignac number, because 22220215 - 2¹ = 22220213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220213) 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, 4620 + ... + 8110.

It is an arithmetic number, because the mean of its divisors is an integer number (1780920).

Almost surely, 2^22220215 is an apocalyptic number.

22220215 is a deficient number, since it is larger than the sum of its proper divisors (6274505).

22220215 is a wasteful number, since it uses less digits than its factorization.

22220215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22220215 is about 4713.8323050359. The cubic root of 22220215 is about 281.1357567284.

Adding to 22220215 its reverse (51202222), we get a palindrome (73422437).

The spelling of 22220215 in words is "twenty-two million, two hundred twenty thousand, two hundred fifteen".