21336334342 has 8 divisors (see below), whose sum is σ = 32006953656. Its totient is φ = 10667349792.

The previous prime is 21336334337. The next prime is 21336334351. The reversal of 21336334342 is 24343363312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21336334298 and 21336334307.

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, 375523 + ... + 428590.

It is an arithmetic number, because the mean of its divisors is an integer number (4000869207).

Almost surely, 2^21336334342 is an apocalyptic number.

21336334342 is a deficient number, since it is larger than the sum of its proper divisors (10670619314).

21336334342 is a wasteful number, since it uses less digits than its factorization.

21336334342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817382.

The product of its digits is 93312, while the sum is 34.

Adding to 21336334342 its reverse (24343363312), we get a palindrome (45679697654).

The spelling of 21336334342 in words is "twenty-one billion, three hundred thirty-six million, three hundred thirty-four thousand, three hundred forty-two".