20332231001209 has 2 divisors, whose sum is σ = 20332231001210. Its totient is φ = 20332231001208.

The previous prime is 20332231001207. The next prime is 20332231001233. The reversal of 20332231001209 is 90210013223302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20319719907600 + 12511093609 = 4507740^2 + 111853^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332231001209 - 2¹ = 20332231001207 is a prime.

Together with 20332231001207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20332231001207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166115500604 + 10166115500605.

It is an arithmetic number, because the mean of its divisors is an integer number (10166115500605).

Almost surely, 2^{20332231001209} is an apocalyptic number.

It is an amenable number.

20332231001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332231001209 is an equidigital number, since it uses as much as digits as its factorization.

20332231001209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 20332231001209 in words is "twenty trillion, three hundred thirty-two billion, two hundred thirty-one million, one thousand, two hundred nine".