22170213 has 32 divisors (see below), whose sum is σ = 35844480. Its totient is φ = 13461120.

The previous prime is 22170199. The next prime is 22170221. The reversal of 22170213 is 31207122.

It is not a de Polignac number, because 22170213 - 2⁸ = 22169957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22170013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28753 + ... + 29513.

It is an arithmetic number, because the mean of its divisors is an integer number (1120140).

Almost surely, 2^22170213 is an apocalyptic number.

It is an amenable number.

22170213 is a deficient number, since it is larger than the sum of its proper divisors (13674267).

22170213 is a wasteful number, since it uses less digits than its factorization.

22170213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 22170213 is about 4708.5255653973. The cubic root of 22170213 is about 280.9247190510.

Adding to 22170213 its reverse (31207122), we get a palindrome (53377335).

The spelling of 22170213 in words is "twenty-two million, one hundred seventy thousand, two hundred thirteen".