21020004224334 has 96 divisors (see below), whose sum is σ = 46031354617248. Its totient is φ = 6931941120000.

The previous prime is 21020004224293. The next prime is 21020004224411. The reversal of 21020004224334 is 43342240002012.

21020004224334 is a `hidden beast` number, since 2 + 1 + 0 + 200 + 0 + 4 + 22 + 433 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21020004224298 and 21020004224307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1512114784 + ... + 1512128684.

It is an arithmetic number, because the mean of its divisors is an integer number (479493277263).

Almost surely, 2^{21020004224334} is an apocalyptic number.

21020004224334 is an abundant number, since it is smaller than the sum of its proper divisors (25011350392914).

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

21020004224334 is a wasteful number, since it uses less digits than its factorization.

21020004224334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15954 (or 15951 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 21020004224334 its reverse (43342240002012), we get a palindrome (64362244226346).

The spelling of 21020004224334 in words is "twenty-one trillion, twenty billion, four million, two hundred twenty-four thousand, three hundred thirty-four".