21104301 has 4 divisors (see below), whose sum is σ = 28139072. Its totient is φ = 14069532.

The previous prime is 21104287. The next prime is 21104311. The reversal of 21104301 is 10340112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21104301 - 2¹⁴ = 21087917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3517381 + ... + 3517386.

It is an arithmetic number, because the mean of its divisors is an integer number (7034768).

Almost surely, 2^21104301 is an apocalyptic number.

It is an amenable number.

21104301 is a deficient number, since it is larger than the sum of its proper divisors (7034771).

21104301 is an equidigital number, since it uses as much as digits as its factorization.

21104301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034770.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 21104301 is about 4593.9417715073. The cubic root of 21104301 is about 276.3484231236.

Adding to 21104301 its reverse (10340112), we get a palindrome (31444413).

The spelling of 21104301 in words is "twenty-one million, one hundred four thousand, three hundred one".