21033212132 has 48 divisors (see below), whose sum is σ = 38833966080. Its totient is φ = 9948256032.

The previous prime is 21033212119. The next prime is 21033212197. The reversal of 21033212132 is 23121233012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7155119 + ... + 7158057.

It is an arithmetic number, because the mean of its divisors is an integer number (809040960).

Almost surely, 2^21033212132 is an apocalyptic number.

It is an amenable number.

21033212132 is a deficient number, since it is larger than the sum of its proper divisors (17800753948).

21033212132 is a wasteful number, since it uses less digits than its factorization.

21033212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800 (or 3798 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21033212132 its reverse (23121233012), we get a palindrome (44154445144).

The spelling of 21033212132 in words is "twenty-one billion, thirty-three million, two hundred twelve thousand, one hundred thirty-two".