21003044332 has 48 divisors (see below), whose sum is σ = 40293288000. Its totient is φ = 9534930944.

The previous prime is 21003044323. The next prime is 21003044347. The reversal of 21003044332 is 23344030012.

It is a happy number.

It is a super-2 number, since 2×21003044332² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2774769 + ... + 2782327.

It is an arithmetic number, because the mean of its divisors is an integer number (839443500).

Almost surely, 2^21003044332 is an apocalyptic number.

It is an amenable number.

21003044332 is a deficient number, since it is larger than the sum of its proper divisors (19290243668).

21003044332 is a wasteful number, since it uses less digits than its factorization.

21003044332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9018 (or 9016 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21003044332 its reverse (23344030012), we get a palindrome (44347074344).

The spelling of 21003044332 in words is "twenty-one billion, three million, forty-four thousand, three hundred thirty-two".