21533341331132 has 12 divisors (see below), whose sum is σ = 38245785349800. Its totient is φ = 10605974088336.

The previous prime is 21533341331119. The next prime is 21533341331137. The reversal of 21533341331132 is 23113314333512.

It is a junction number, because it is equal to n+sod(n) for n = 21533341331092 and 21533341331101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21533341331137) 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, 40174144007 + ... + 40174144542.

It is an arithmetic number, because the mean of its divisors is an integer number (3187148779150).

Almost surely, 2^{21533341331132} is an apocalyptic number.

It is an amenable number.

21533341331132 is a deficient number, since it is larger than the sum of its proper divisors (16712444018668).

21533341331132 is a wasteful number, since it uses less digits than its factorization.

21533341331132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80348288620 (or 80348288618 counting only the distinct ones).

The product of its digits is 58320, while the sum is 35.

Adding to 21533341331132 its reverse (23113314333512), we get a palindrome (44646655664644).

The spelling of 21533341331132 in words is "twenty-one trillion, five hundred thirty-three billion, three hundred forty-one million, three hundred thirty-one thousand, one hundred thirty-two".