21301331302 has 4 divisors (see below), whose sum is σ = 31951996956. Its totient is φ = 10650665650.

The previous prime is 21301331291. The next prime is 21301331339. The reversal of 21301331302 is 20313310312.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21301331302.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5325332824 + ... + 5325332827.

It is an arithmetic number, because the mean of its divisors is an integer number (7987999239).

Almost surely, 2^21301331302 is an apocalyptic number.

21301331302 is a deficient number, since it is larger than the sum of its proper divisors (10650665654).

21301331302 is a wasteful number, since it uses less digits than its factorization.

21301331302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650665653.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21301331302 its reverse (20313310312), we get a palindrome (41614641614).

The spelling of 21301331302 in words is "twenty-one billion, three hundred one million, three hundred thirty-one thousand, three hundred two".