21332606 has 8 divisors (see below), whose sum is σ = 32602824. Its totient is φ = 10465000.

The previous prime is 21332579. The next prime is 21332621. The reversal of 21332606 is 60623312.

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

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, 100520 + ... + 100731.

It is an arithmetic number, because the mean of its divisors is an integer number (4075353).

Almost surely, 2^21332606 is an apocalyptic number.

21332606 is a deficient number, since it is larger than the sum of its proper divisors (11270218).

21332606 is a wasteful number, since it uses less digits than its factorization.

21332606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201306.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 21332606 is about 4618.7234167029. The cubic root of 21332606 is about 277.3413577996.

Adding to 21332606 its reverse (60623312), we get a palindrome (81955918).

The spelling of 21332606 in words is "twenty-one million, three hundred thirty-two thousand, six hundred six".