20320010204021 has 8 divisors (see below), whose sum is σ = 22180377372384. Its totient is φ = 18461825287920.

The previous prime is 20320010203963. The next prime is 20320010204071. The reversal of 20320010204021 is 12040201002302.

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

It is a cyclic number.

It is not a de Polignac number, because 20320010204021 - 2²² = 20320006009717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320010204071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545543591 + ... + 545580836.

It is an arithmetic number, because the mean of its divisors is an integer number (2772547171548).

Almost surely, 2^{20320010204021} is an apocalyptic number.

It is an amenable number.

20320010204021 is a deficient number, since it is larger than the sum of its proper divisors (1860367168363).

20320010204021 is a wasteful number, since it uses less digits than its factorization.

20320010204021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091126131.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20320010204021 its reverse (12040201002302), we get a palindrome (32360211206323).

The spelling of 20320010204021 in words is "twenty trillion, three hundred twenty billion, ten million, two hundred four thousand, twenty-one".