21104014 has 4 divisors (see below), whose sum is σ = 31656024. Its totient is φ = 10552006.

The previous prime is 21104011. The next prime is 21104029. The reversal of 21104014 is 41040112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21103985 and 21104003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5276002 + ... + 5276005.

It is an arithmetic number, because the mean of its divisors is an integer number (7914006).

Almost surely, 2^21104014 is an apocalyptic number.

21104014 is a deficient number, since it is larger than the sum of its proper divisors (10552010).

21104014 is a wasteful number, since it uses less digits than its factorization.

21104014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552009.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 21104014 is about 4593.9105346099. The cubic root of 21104014 is about 276.3471704192.

Adding to 21104014 its reverse (41040112), we get a palindrome (62144126).

The spelling of 21104014 in words is "twenty-one million, one hundred four thousand, fourteen".