20321222 has 32 divisors (see below), whose sum is σ = 34473600. Its totient is φ = 8926848.

The previous prime is 20321201. The next prime is 20321233. The reversal of 20321222 is 22212302.

It is a junction number, because it is equal to n+sod(n) for n = 20321197 and 20321206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53429 + ... + 53807.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^20321222 is an apocalyptic number.

20321222 is a deficient number, since it is larger than the sum of its proper divisors (14152378).

20321222 is a wasteful number, since it uses less digits than its factorization.

20321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20321222 is about 4507.9066095029. The cubic root of 20321222 is about 272.8872680128.

Adding to 20321222 its reverse (22212302), we get a palindrome (42533524).

The spelling of 20321222 in words is "twenty million, three hundred twenty-one thousand, two hundred twenty-two".