21332134 has 4 divisors (see below), whose sum is σ = 31998204. Its totient is φ = 10666066.

The previous prime is 21332119. The next prime is 21332141. The reversal of 21332134 is 43123312.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333032 + ... + 5333035.

It is an arithmetic number, because the mean of its divisors is an integer number (7999551).

Almost surely, 2^21332134 is an apocalyptic number.

21332134 is a deficient number, since it is larger than the sum of its proper divisors (10666070).

21332134 is a wasteful number, since it uses less digits than its factorization.

21332134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10666069.

The product of its digits is 432, while the sum is 19.

The square root of 21332134 is about 4618.6723200504. The cubic root of 21332134 is about 277.3393123223.

Adding to 21332134 its reverse (43123312), we get a palindrome (64455446).

The spelling of 21332134 in words is "twenty-one million, three hundred thirty-two thousand, one hundred thirty-four".