21331313302 has 16 divisors (see below), whose sum is σ = 34478231760. Its totient is φ = 9839519712.

The previous prime is 21331313293. The next prime is 21331313303. The reversal of 21331313302 is 20331313312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331313303) 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 7 ways as a sum of consecutive naturals, for example, 191652 + ... + 281767.

It is an arithmetic number, because the mean of its divisors is an integer number (2154889485).

Almost surely, 2^21331313302 is an apocalyptic number.

21331313302 is a deficient number, since it is larger than the sum of its proper divisors (13146918458).

21331313302 is a wasteful number, since it uses less digits than its factorization.

21331313302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475167.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21331313302 its reverse (20331313312), we get a palindrome (41662626614).

The spelling of 21331313302 in words is "twenty-one billion, three hundred thirty-one million, three hundred thirteen thousand, three hundred two".