21201334 has 32 divisors (see below), whose sum is σ = 40937472. Its totient is φ = 7992000.

The previous prime is 21201311. The next prime is 21201347. The reversal of 21201334 is 43310212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 2554 + ... + 6994.

It is an arithmetic number, because the mean of its divisors is an integer number (1279296).

Almost surely, 2^21201334 is an apocalyptic number.

21201334 is a deficient number, since it is larger than the sum of its proper divisors (19736138).

21201334 is a wasteful number, since it uses less digits than its factorization.

21201334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 21201334 is about 4604.4906341527. The cubic root of 21201334 is about 276.7713057200.

Adding to 21201334 its reverse (43310212), we get a palindrome (64511546).

The spelling of 21201334 in words is "twenty-one million, two hundred one thousand, three hundred thirty-four".