21231020301 has 8 divisors (see below), whose sum is σ = 28329790944. Its totient is φ = 14143131600.

The previous prime is 21231020273. The next prime is 21231020303. The reversal of 21231020301 is 10302013212.

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

It is not a de Polignac number, because 21231020301 - 2⁵ = 21231020269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231020303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2715931 + ... + 2723736.

It is an arithmetic number, because the mean of its divisors is an integer number (3541223868).

Almost surely, 2^21231020301 is an apocalyptic number.

It is an amenable number.

21231020301 is a deficient number, since it is larger than the sum of its proper divisors (7098770643).

21231020301 is a wasteful number, since it uses less digits than its factorization.

21231020301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440971.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21231020301 its reverse (10302013212), we get a palindrome (31533033513).

The spelling of 21231020301 in words is "twenty-one billion, two hundred thirty-one million, twenty thousand, three hundred one".