20232321111209 has 2 divisors, whose sum is σ = 20232321111210. Its totient is φ = 20232321111208.

The previous prime is 20232321111199. The next prime is 20232321111221. The reversal of 20232321111209 is 90211112323202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20053558734400 + 178762376809 = 4478120^2 + 422803^2 .

It is a cyclic number.

It is not a de Polignac number, because 20232321111209 - 2²⁴ = 20232304333993 is a prime.

It is not a weakly prime, because it can be changed into another prime (20232321111109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116160555604 + 10116160555605.

It is an arithmetic number, because the mean of its divisors is an integer number (10116160555605).

Almost surely, 2^{20232321111209} is an apocalyptic number.

It is an amenable number.

20232321111209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20232321111209 is an equidigital number, since it uses as much as digits as its factorization.

20232321111209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 20232321111209 in words is "twenty trillion, two hundred thirty-two billion, three hundred twenty-one million, one hundred eleven thousand, two hundred nine".