22220959 has 4 divisors (see below), whose sum is σ = 22240000. Its totient is φ = 22201920.

The previous prime is 22220953. The next prime is 22220963. The reversal of 22220959 is 95902222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22220959 - 2³ = 22220951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22220959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220951) 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, 7647 + ... + 10144.

It is an arithmetic number, because the mean of its divisors is an integer number (5560000).

Almost surely, 2^22220959 is an apocalyptic number.

22220959 is a deficient number, since it is larger than the sum of its proper divisors (19041).

22220959 is a wasteful number, since it uses less digits than its factorization.

22220959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19040.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 22220959 is about 4713.9112210562. The cubic root of 22220959 is about 281.1388944519.

The spelling of 22220959 in words is "twenty-two million, two hundred twenty thousand, nine hundred fifty-nine".