21322414 has 4 divisors (see below), whose sum is σ = 31983624. Its totient is φ = 10661206.

The previous prime is 21322391. The next prime is 21322417. The reversal of 21322414 is 41422312.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 21322391 and 21322400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330602 + ... + 5330605.

It is an arithmetic number, because the mean of its divisors is an integer number (7995906).

Almost surely, 2^21322414 is an apocalyptic number.

21322414 is a deficient number, since it is larger than the sum of its proper divisors (10661210).

21322414 is a wasteful number, since it uses less digits than its factorization.

21322414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661209.

The product of its digits is 384, while the sum is 19.

The square root of 21322414 is about 4617.6199497144. The cubic root of 21322414 is about 277.2971826467.

Adding to 21322414 its reverse (41422312), we get a palindrome (62744726).

It can be divided in two parts, 21322 and 414, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 21322414 in words is "twenty-one million, three hundred twenty-two thousand, four hundred fourteen".