21033113032 has 16 divisors (see below), whose sum is σ = 39579463260. Its totient is φ = 10478589504.

The previous prime is 21033113029. The next prime is 21033113033. The reversal of 21033113032 is 23031133012.

It can be written as a sum of positive squares in 2 ways, for example, as 20361577636 + 671535396 = 142694^2 + 25914^2 .

It is not an unprimeable number, because it can be changed into a prime (21033113033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4743523 + ... + 4747954.

Almost surely, 2^21033113032 is an apocalyptic number.

It is an amenable number.

21033113032 is a deficient number, since it is larger than the sum of its proper divisors (18546350228).

21033113032 is a wasteful number, since it uses less digits than its factorization.

21033113032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9491760 (or 9491756 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21033113032 its reverse (23031133012), we get a palindrome (44064246044).

The spelling of 21033113032 in words is "twenty-one billion, thirty-three million, one hundred thirteen thousand, thirty-two".