21034033332 has 96 divisors (see below), whose sum is σ = 53754809472. Its totient is φ = 6362205696.

The previous prime is 21034033327. The next prime is 21034033403. The reversal of 21034033332 is 23333043012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5819958 + ... + 5823570.

It is an arithmetic number, because the mean of its divisors is an integer number (559945932).

Almost surely, 2^21034033332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21034033332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26877404736).

21034033332 is an abundant number, since it is smaller than the sum of its proper divisors (32720776140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21034033332 is a wasteful number, since it uses less digits than its factorization.

21034033332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257 (or 4255 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21034033332 its reverse (23333043012), we get a palindrome (44367076344).

The spelling of 21034033332 in words is "twenty-one billion, thirty-four million, thirty-three thousand, three hundred thirty-two".