21325334 has 32 divisors (see below), whose sum is σ = 35650560. Its totient is φ = 9525600.

The previous prime is 21325331. The next prime is 21325349. The reversal of 21325334 is 43352312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21325331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50444 + ... + 50864.

It is an arithmetic number, because the mean of its divisors is an integer number (1114080).

Almost surely, 2^21325334 is an apocalyptic number.

21325334 is a deficient number, since it is larger than the sum of its proper divisors (14325226).

21325334 is a wasteful number, since it uses less digits than its factorization.

21325334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its digits is 2160, while the sum is 23.

The square root of 21325334 is about 4617.9361190904. The cubic root of 21325334 is about 277.3098402319.

Adding to 21325334 its reverse (43352312), we get a palindrome (64677646).

The spelling of 21325334 in words is "twenty-one million, three hundred twenty-five thousand, three hundred thirty-four".