21224101304 has 16 divisors (see below), whose sum is σ = 45480217200. Its totient is φ = 9096043392.

The previous prime is 21224101267. The next prime is 21224101319. The reversal of 21224101304 is 40310142212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189500849 + ... + 189500960.

It is an arithmetic number, because the mean of its divisors is an integer number (2842513575).

Almost surely, 2^21224101304 is an apocalyptic number.

It is an amenable number.

21224101304 is an abundant number, since it is smaller than the sum of its proper divisors (24256115896).

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

21224101304 is a wasteful number, since it uses less digits than its factorization.

21224101304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379001822 (or 379001818 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21224101304 its reverse (40310142212), we get a palindrome (61534243516).

The spelling of 21224101304 in words is "twenty-one billion, two hundred twenty-four million, one hundred one thousand, three hundred four".