20043003021 has 8 divisors (see below), whose sum is σ = 27062282880. Its totient is φ = 13192862592.

The previous prime is 20043002989. The next prime is 20043003037. The reversal of 20043003021 is 12030034002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20043003021 - 2⁵ = 20043002989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043003041) 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 7 ways as a sum of consecutive naturals, for example, 42284580 + ... + 42285053.

It is an arithmetic number, because the mean of its divisors is an integer number (3382785360).

Almost surely, 2^20043003021 is an apocalyptic number.

It is an amenable number.

20043003021 is a deficient number, since it is larger than the sum of its proper divisors (7019279859).

20043003021 is an equidigital number, since it uses as much as digits as its factorization.

20043003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84569715.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20043003021 its reverse (12030034002), we get a palindrome (32073037023).

The spelling of 20043003021 in words is "twenty billion, forty-three million, three thousand, twenty-one".