21311320302332 has 12 divisors (see below), whose sum is σ = 37321973547096. Its totient is φ = 10647899288880.

The previous prime is 21311320302331. The next prime is 21311320302401. The reversal of 21311320302332 is 23320302311312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21311320302331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940209394 + ... + 1940220377.

It is an arithmetic number, because the mean of its divisors is an integer number (3110164462258).

Almost surely, 2^{21311320302332} is an apocalyptic number.

It is an amenable number.

21311320302332 is a deficient number, since it is larger than the sum of its proper divisors (16010653244764).

21311320302332 is a wasteful number, since it uses less digits than its factorization.

21311320302332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880431148 (or 3880431146 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21311320302332 its reverse (23320302311312), we get a palindrome (44631622613644).

The spelling of 21311320302332 in words is "twenty-one trillion, three hundred eleven billion, three hundred twenty million, three hundred two thousand, three hundred thirty-two".