22020215 has 16 divisors (see below), whose sum is σ = 30289728. Its totient is φ = 15054336.

The previous prime is 22020211. The next prime is 22020227. The reversal of 22020215 is 51202022.

It is a cyclic number.

It is not a de Polignac number, because 22020215 - 2² = 22020211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22020215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020211) 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, 14429 + ... + 15881.

It is an arithmetic number, because the mean of its divisors is an integer number (1893108).

Almost surely, 2^22020215 is an apocalyptic number.

22020215 is a deficient number, since it is larger than the sum of its proper divisors (8269513).

22020215 is a wasteful number, since it uses less digits than its factorization.

22020215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 22020215 is about 4692.5701912705. The cubic root of 22020215 is about 280.2897298607.

Adding to 22020215 its reverse (51202022), we get a palindrome (73222237).

The spelling of 22020215 in words is "twenty-two million, twenty thousand, two hundred fifteen".