22021330 has 8 divisors (see below), whose sum is σ = 39638412. Its totient is φ = 8808528.

The previous prime is 22021319. The next prime is 22021331. The reversal of 22021330 is 3312022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21967969 + 53361 = 4687^2 + 231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22021330.

It is not an unprimeable number, because it can be changed into a prime (22021331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101057 + ... + 1101076.

Almost surely, 2^22021330 is an apocalyptic number.

22021330 is a deficient number, since it is larger than the sum of its proper divisors (17617082).

22021330 is a wasteful number, since it uses less digits than its factorization.

22021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202140.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 22021330 is about 4692.6889945957. The cubic root of 22021330 is about 280.2944606315.

Adding to 22021330 its reverse (3312022), we get a palindrome (25333352).

The spelling of 22021330 in words is "twenty-two million, twenty-one thousand, three hundred thirty".