21301301 has 8 divisors (see below), whose sum is σ = 24757440. Its totient is φ = 17948448.

The previous prime is 21301279. The next prime is 21301321. The reversal of 21301301 is 10310312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21301301 - 2¹⁴ = 21284917 is a prime.

It is a Duffinian 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 (21301321) 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, 25376 + ... + 26201.

It is an arithmetic number, because the mean of its divisors is an integer number (3094680).

Almost surely, 2^21301301 is an apocalyptic number.

It is an amenable number.

21301301 is a deficient number, since it is larger than the sum of its proper divisors (3456139).

21301301 is an equidigital number, since it uses as much as digits as its factorization.

21301301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51643.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 21301301 is about 4615.3332490731. Note that the first 3 decimals coincide. The cubic root of 21301301 is about 277.2056278343.

Adding to 21301301 its reverse (10310312), we get a palindrome (31611613).

The spelling of 21301301 in words is "twenty-one million, three hundred one thousand, three hundred one".