20021003032 has 32 divisors (see below), whose sum is σ = 38046743280. Its totient is φ = 9875555200.

The previous prime is 20021002987. The next prime is 20021003033. The reversal of 20021003032 is 23030012002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021003033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443958 + ... + 486970.

Almost surely, 2^20021003032 is an apocalyptic number.

It is an amenable number.

20021003032 is a deficient number, since it is larger than the sum of its proper divisors (18025740248).

20021003032 is a wasteful number, since it uses less digits than its factorization.

20021003032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43803 (or 43799 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20021003032 its reverse (23030012002), we get a palindrome (43051015034).

The spelling of 20021003032 in words is "twenty billion, twenty-one million, three thousand, thirty-two".