21302027404 has 48 divisors (see below), whose sum is σ = 44358785856. Its totient is φ = 8760729600.

The previous prime is 21302027381. The next prime is 21302027413. The reversal of 21302027404 is 40472020312.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82069 + ... + 222124.

It is an arithmetic number, because the mean of its divisors is an integer number (924141372).

Almost surely, 2^21302027404 is an apocalyptic number.

It is an amenable number.

21302027404 is an abundant number, since it is smaller than the sum of its proper divisors (23056758452).

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

21302027404 is a wasteful number, since it uses less digits than its factorization.

21302027404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304306 (or 304304 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

Adding to 21302027404 its reverse (40472020312), we get a palindrome (61774047716).

The spelling of 21302027404 in words is "twenty-one billion, three hundred two million, twenty-seven thousand, four hundred four".