21334332414424 has 16 divisors (see below), whose sum is σ = 40002251857200. Its totient is φ = 10667065252512.

The previous prime is 21334332414407. The next prime is 21334332414433. The reversal of 21334332414424 is 42441423343312.

It is a happy number.

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, 11717412 + ... + 13415155.

It is an arithmetic number, because the mean of its divisors is an integer number (2500140741075).

Almost surely, 2^{21334332414424} is an apocalyptic number.

It is an amenable number.

21334332414424 is a deficient number, since it is larger than the sum of its proper divisors (18667919442776).

21334332414424 is a wasteful number, since it uses less digits than its factorization.

21334332414424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25238682 (or 25238678 counting only the distinct ones).

The product of its digits is 663552, while the sum is 40.

Adding to 21334332414424 its reverse (42441423343312), we get a palindrome (63775755757736).

The spelling of 21334332414424 in words is "twenty-one trillion, three hundred thirty-four billion, three hundred thirty-two million, four hundred fourteen thousand, four hundred twenty-four".