20112133210321 has 24 divisors (see below), whose sum is σ = 21729526304640. Its totient is φ = 18602343766944.

The previous prime is 20112133210307. The next prime is 20112133210343. The reversal of 20112133210321 is 12301233121102.

It is not a de Polignac number, because 20112133210321 - 2³³ = 20103543275729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112133210292 and 20112133210301.

It is not an unprimeable number, because it can be changed into a prime (20112133210391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35311720 + ... + 35876758.

It is an arithmetic number, because the mean of its divisors is an integer number (905396929360).

Almost surely, 2^{20112133210321} is an apocalyptic number.

It is an amenable number.

20112133210321 is a deficient number, since it is larger than the sum of its proper divisors (1617393094319).

20112133210321 is a wasteful number, since it uses less digits than its factorization.

20112133210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567413 (or 567394 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20112133210321 its reverse (12301233121102), we get a palindrome (32413366331423).

The spelling of 20112133210321 in words is "twenty trillion, one hundred twelve billion, one hundred thirty-three million, two hundred ten thousand, three hundred twenty-one".