21131330301 has 72 divisors (see below), whose sum is σ = 33666927840. Its totient is φ = 13242442464.

The previous prime is 21131330279. The next prime is 21131330357. The reversal of 21131330301 is 10303313112.

It is a happy number.

21131330301 is a `hidden beast` number, since 2 + 1 + 1 + 31 + 330 + 301 = 666.

It is not a de Polignac number, because 21131330301 - 2¹⁵ = 21131297533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131330371) 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 71 ways as a sum of consecutive naturals, for example, 12192631 + ... + 12194363.

It is an arithmetic number, because the mean of its divisors is an integer number (467596220).

Almost surely, 2^21131330301 is an apocalyptic number.

It is an amenable number.

21131330301 is a deficient number, since it is larger than the sum of its proper divisors (12535597539).

21131330301 is a wasteful number, since it uses less digits than its factorization.

21131330301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21131330301 its reverse (10303313112), we get a palindrome (31434643413).

The spelling of 21131330301 in words is "twenty-one billion, one hundred thirty-one million, three hundred thirty thousand, three hundred one".