21324022404 has 24 divisors (see below), whose sum is σ = 49771871520. Its totient is φ = 7105747584.

The previous prime is 21324022399. The next prime is 21324022417. The reversal of 21324022404 is 40422042312.

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, 242949 + ... + 318860.

It is an arithmetic number, because the mean of its divisors is an integer number (2073827980).

Almost surely, 2^21324022404 is an apocalyptic number.

It is an amenable number.

21324022404 is an abundant number, since it is smaller than the sum of its proper divisors (28447849116).

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

21324022404 is a wasteful number, since it uses less digits than its factorization.

21324022404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564979 (or 564977 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21324022404 its reverse (40422042312), we get a palindrome (61746064716).

The spelling of 21324022404 in words is "twenty-one billion, three hundred twenty-four million, twenty-two thousand, four hundred four".