21214638327 has 8 divisors (see below), whose sum is σ = 28476025200. Its totient is φ = 14048171840.

The previous prime is 21214638307. The next prime is 21214638329. The reversal of 21214638327 is 72383641212.

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 21214638327 - 2¹⁹ = 21214114039 is a prime.

It is a super-3 number, since 3×21214638327³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214638329) 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, 23729574 + ... + 23730467.

It is an arithmetic number, because the mean of its divisors is an integer number (3559503150).

Almost surely, 2^21214638327 is an apocalyptic number.

21214638327 is a deficient number, since it is larger than the sum of its proper divisors (7261386873).

21214638327 is a wasteful number, since it uses less digits than its factorization.

21214638327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47460193.

The product of its digits is 96768, while the sum is 39.

The spelling of 21214638327 in words is "twenty-one billion, two hundred fourteen million, six hundred thirty-eight thousand, three hundred twenty-seven".