22002212 has 12 divisors (see below), whose sum is σ = 39135516. Its totient is φ = 10820640.

The previous prime is 22002203. The next prime is 22002217. The reversal of 22002212 is 21220022.

It can be written as a sum of positive squares in 2 ways, for example, as 10278436 + 11723776 = 3206^2 + 3424^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22002193 and 22002202.

It is not an unprimeable number, because it can be changed into a prime (22002217) 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, 44843 + ... + 45330.

It is an arithmetic number, because the mean of its divisors is an integer number (3261293).

Almost surely, 2^22002212 is an apocalyptic number.

It is an amenable number.

22002212 is a deficient number, since it is larger than the sum of its proper divisors (17133304).

22002212 is a wasteful number, since it uses less digits than its factorization.

22002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90238 (or 90236 counting only the distinct ones).

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

The square root of 22002212 is about 4690.6515538889. The cubic root of 22002212 is about 280.2133238281.

Adding to 22002212 its reverse (21220022), we get a palindrome (43222234).

The spelling of 22002212 in words is "twenty-two million, two thousand, two hundred twelve".