20331000133321 has 8 divisors (see below), whose sum is σ = 21696444794880. Its totient is φ = 18984389191488.

The previous prime is 20331000133309. The next prime is 20331000133337. The reversal of 20331000133321 is 12333100013302.

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 20331000133321 - 2¹⁷ = 20331000002249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331000133292 and 20331000133301.

It is not an unprimeable number, because it can be changed into a prime (20331000133361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4708427701 + ... + 4708432018.

It is an arithmetic number, because the mean of its divisors is an integer number (2712055599360).

Almost surely, 2^{20331000133321} is an apocalyptic number.

It is an amenable number.

20331000133321 is a deficient number, since it is larger than the sum of its proper divisors (1365444661559).

20331000133321 is a wasteful number, since it uses less digits than its factorization.

20331000133321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9416859863.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 20331000133321 its reverse (12333100013302), we get a palindrome (32664100146623).

The spelling of 20331000133321 in words is "twenty trillion, three hundred thirty-one billion, one hundred thirty-three thousand, three hundred twenty-one".