21331311311332 has 72 divisors (see below), whose sum is σ = 42575392933920. Its totient is φ = 9273521262720.

The previous prime is 21331311311311. The next prime is 21331311311333. The reversal of 21331311311332 is 23311311313312.

It is a happy number.

It is a super-2 number, since 2×21331311311332² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21331311311332.

It is not an unprimeable number, because it can be changed into a prime (21331311311333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253410283 + ... + 253494445.

It is an arithmetic number, because the mean of its divisors is an integer number (591324901860).

Almost surely, 2^{21331311311332} is an apocalyptic number.

21331311311332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21331311311332 is a deficient number, since it is larger than the sum of its proper divisors (21244081622588).

21331311311332 is a wasteful number, since it uses less digits than its factorization.

21331311311332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95113 (or 95088 counting only the distinct ones).

The product of its digits is 2916, while the sum is 28.

Adding to 21331311311332 its reverse (23311311313312), we get a palindrome (44642622624644).

The spelling of 21331311311332 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred eleven million, three hundred eleven thousand, three hundred thirty-two".