22020212 has 6 divisors (see below), whose sum is σ = 38535378. Its totient is φ = 11010104.

The previous prime is 22020211. The next prime is 22020227. The reversal of 22020212 is 21202022.

It can be written as a sum of positive squares in only one way, i.e., 21864976 + 155236 = 4676^2 + 394^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22020193 and 22020202.

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752523 + ... + 2752530.

It is an arithmetic number, because the mean of its divisors is an integer number (6422563).

Almost surely, 2^22020212 is an apocalyptic number.

It is an amenable number.

22020212 is a deficient number, since it is larger than the sum of its proper divisors (16515166).

22020212 is a wasteful number, since it uses less digits than its factorization.

22020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505057 (or 5505055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22020212 is about 4692.5698716162. The cubic root of 22020212 is about 280.2897171319.

Adding to 22020212 its reverse (21202022), we get a palindrome (43222234).

The spelling of 22020212 in words is "twenty-two million, twenty thousand, two hundred twelve".