20433301021 has 8 divisors (see below), whose sum is σ = 23895422144. Its totient is φ = 17106949440.

The previous prime is 20433301003. The next prime is 20433301027. The reversal of 20433301021 is 12010333402.

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

It is not a de Polignac number, because 20433301021 - 2⁷ = 20433300893 is a prime.

It is a super-2 number, since 2×20433301021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20433301021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433301027) 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, 33942060 + ... + 33942661.

It is an arithmetic number, because the mean of its divisors is an integer number (2986927768).

Almost surely, 2^20433301021 is an apocalyptic number.

It is an amenable number.

20433301021 is a deficient number, since it is larger than the sum of its proper divisors (3462121123).

20433301021 is an equidigital number, since it uses as much as digits as its factorization.

20433301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67884771.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20433301021 its reverse (12010333402), we get a palindrome (32443634423).

The spelling of 20433301021 in words is "twenty billion, four hundred thirty-three million, three hundred one thousand, twenty-one".