21324004022 has 8 divisors (see below), whose sum is σ = 32020439400. Its totient is φ = 10650524224.

The previous prime is 21324004003. The next prime is 21324004027. The reversal of 21324004022 is 22040042312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21324003985 and 21324004003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21324004027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5736572 + ... + 5740287.

It is an arithmetic number, because the mean of its divisors is an integer number (4002554925).

Almost surely, 2^21324004022 is an apocalyptic number.

21324004022 is a deficient number, since it is larger than the sum of its proper divisors (10696435378).

21324004022 is a wasteful number, since it uses less digits than its factorization.

21324004022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11477790.

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

Adding to 21324004022 its reverse (22040042312), we get a palindrome (43364046334).

The spelling of 21324004022 in words is "twenty-one billion, three hundred twenty-four million, four thousand, twenty-two".