21321062 has 8 divisors (see below), whose sum is σ = 36550416. Its totient is φ = 9137592.

The previous prime is 21321031. The next prime is 21321067. The reversal of 21321062 is 26012312.

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

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 21321062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761453 + ... + 761480.

It is an arithmetic number, because the mean of its divisors is an integer number (4568802).

Almost surely, 2^21321062 is an apocalyptic number.

21321062 is a deficient number, since it is larger than the sum of its proper divisors (15229354).

21321062 is a wasteful number, since it uses less digits than its factorization.

21321062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522942.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 21321062 is about 4617.4735516297. The cubic root of 21321062 is about 277.2913216199.

Adding to 21321062 its reverse (26012312), we get a palindrome (47333374).

The spelling of 21321062 in words is "twenty-one million, three hundred twenty-one thousand, sixty-two".