21022222322 has 16 divisors (see below), whose sum is σ = 33314751360. Its totient is φ = 9932728848.

The previous prime is 21022222303. The next prime is 21022222349. The reversal of 21022222322 is 22322222012.

It is a junction number, because it is equal to n+sod(n) for n = 21022222294 and 21022222303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3853148 + ... + 3858599.

It is an arithmetic number, because the mean of its divisors is an integer number (2082171960).

Almost surely, 2^21022222322 is an apocalyptic number.

21022222322 is a deficient number, since it is larger than the sum of its proper divisors (12292529038).

21022222322 is a wasteful number, since it uses less digits than its factorization.

21022222322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711825.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21022222322 its reverse (22322222012), we get a palindrome (43344444334).

The spelling of 21022222322 in words is "twenty-one billion, twenty-two million, two hundred twenty-two thousand, three hundred twenty-two".