20112203212321 has 64 divisors (see below), whose sum is σ = 23249719443456. Its totient is φ = 17219730528000.

The previous prime is 20112203212313. The next prime is 20112203212357. The reversal of 20112203212321 is 12321230221102.

It is not a de Polignac number, because 20112203212321 - 2³ = 20112203212313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112203212292 and 20112203212301.

It is not an unprimeable number, because it can be changed into a prime (20112203212391) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10308662896 + ... + 10308664846.

It is an arithmetic number, because the mean of its divisors is an integer number (363276866304).

Almost surely, 2^{20112203212321} is an apocalyptic number.

It is an amenable number.

20112203212321 is a deficient number, since it is larger than the sum of its proper divisors (3137516231135).

20112203212321 is a wasteful number, since it uses less digits than its factorization.

20112203212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20112203212321 its reverse (12321230221102), we get a palindrome (32433433433423).

The spelling of 20112203212321 in words is "twenty trillion, one hundred twelve billion, two hundred three million, two hundred twelve thousand, three hundred twenty-one".