21833650421 has 8 divisors (see below), whose sum is σ = 23819896800. Its totient is φ = 19847632240.

The previous prime is 21833650417. The next prime is 21833650499. The reversal of 21833650421 is 12405633812.

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

It is a cyclic number.

It is not a de Polignac number, because 21833650421 - 2² = 21833650417 is a prime.

It is a super-3 number, since 3×21833650421³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21833650411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189275 + ... + 281943.

It is an arithmetic number, because the mean of its divisors is an integer number (2977487100).

Almost surely, 2^21833650421 is an apocalyptic number.

It is an amenable number.

21833650421 is a deficient number, since it is larger than the sum of its proper divisors (1986246379).

21833650421 is a wasteful number, since it uses less digits than its factorization.

21833650421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114099.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 21833650421 in words is "twenty-one billion, eight hundred thirty-three million, six hundred fifty thousand, four hundred twenty-one".