21022322 has 32 divisors (see below), whose sum is σ = 35251200. Its totient is φ = 9356688.

The previous prime is 21022279. The next prime is 21022357. The reversal of 21022322 is 22322012.

It is a junction number, because it is equal to n+sod(n) for n = 21022297 and 21022306.

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, 58379 + ... + 58737.

It is an arithmetic number, because the mean of its divisors is an integer number (1101600).

Almost surely, 2^21022322 is an apocalyptic number.

21022322 is a deficient number, since it is larger than the sum of its proper divisors (14228878).

21022322 is a wasteful number, since it uses less digits than its factorization.

21022322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470.

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

The square root of 21022322 is about 4585.0105779594. The cubic root of 21022322 is about 275.9901365235.

Adding to 21022322 its reverse (22322012), we get a palindrome (43344334).

The spelling of 21022322 in words is "twenty-one million, twenty-two thousand, three hundred twenty-two".