21962022 has 16 divisors (see below), whose sum is σ = 43989312. Its totient is φ = 7309800.

The previous prime is 21962021. The next prime is 21962027. The reversal of 21962022 is 22026912.

It is a junction number, because it is equal to n+sod(n) for n = 21961983 and 21962001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21962021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397 + ... + 7047.

It is an arithmetic number, because the mean of its divisors is an integer number (2749332).

Almost surely, 2^21962022 is an apocalyptic number.

21962022 is an abundant number, since it is smaller than the sum of its proper divisors (22027290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21962022 is a wasteful number, since it uses less digits than its factorization.

21962022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5443.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 21962022 is about 4686.3655427207. The cubic root of 21962022 is about 280.0426040614.

Adding to 21962022 its reverse (22026912), we get a palindrome (43988934).

The spelling of 21962022 in words is "twenty-one million, nine hundred sixty-two thousand, twenty-two".