21103334 has 16 divisors (see below), whose sum is σ = 36246528. Its totient is φ = 9026952.

The previous prime is 21103321. The next prime is 21103337. The reversal of 21103334 is 43330112.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8459 + ... + 10665.

It is an arithmetic number, because the mean of its divisors is an integer number (2265408).

Almost surely, 2^21103334 is an apocalyptic number.

21103334 is a deficient number, since it is larger than the sum of its proper divisors (15143194).

21103334 is a wasteful number, since it uses less digits than its factorization.

21103334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 21103334 is about 4593.8365229947. The cubic root of 21103334 is about 276.3442022935.

Adding to 21103334 its reverse (43330112), we get a palindrome (64433446).

The spelling of 21103334 in words is "twenty-one million, one hundred three thousand, three hundred thirty-four".