20210222 has 8 divisors (see below), whose sum is σ = 30349296. Its totient is φ = 10093792.

The previous prime is 20210189. The next prime is 20210237. The reversal of 20210222 is 22201202.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3218 + ... + 7125.

It is an arithmetic number, because the mean of its divisors is an integer number (3793662).

Almost surely, 2^20210222 is an apocalyptic number.

20210222 is a deficient number, since it is larger than the sum of its proper divisors (10139074).

20210222 is a wasteful number, since it uses less digits than its factorization.

20210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11322.

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

The square root of 20210222 is about 4495.5780495950. The cubic root of 20210222 is about 272.3894992872.

Adding to 20210222 its reverse (22201202), we get a palindrome (42411424).

The spelling of 20210222 in words is "twenty million, two hundred ten thousand, two hundred twenty-two".