21320012301 has 16 divisors (see below), whose sum is σ = 33178865664. Its totient is φ = 11923653744.

The previous prime is 21320012269. The next prime is 21320012353. The reversal of 21320012301 is 10321002312.

It is not a de Polignac number, because 21320012301 - 2⁵ = 21320012269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320012401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10799425 + ... + 10801398.

It is an arithmetic number, because the mean of its divisors is an integer number (2073679104).

Almost surely, 2^21320012301 is an apocalyptic number.

21320012301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21320012301 is a deficient number, since it is larger than the sum of its proper divisors (11858853363).

21320012301 is a wasteful number, since it uses less digits than its factorization.

21320012301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21600880.

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

Adding to 21320012301 its reverse (10321002312), we get a palindrome (31641014613).

The spelling of 21320012301 in words is "twenty-one billion, three hundred twenty million, twelve thousand, three hundred one".