20123211230201 has 2 divisors, whose sum is σ = 20123211230202. Its totient is φ = 20123211230200.

The previous prime is 20123211230191. The next prime is 20123211230249. The reversal of 20123211230201 is 10203211232102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13556394973801 + 6566816256400 = 3681901^2 + 2562580^2 .

It is a cyclic number.

It is not a de Polignac number, because 20123211230201 - 2⁴² = 15725164719097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20123211230281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061605615100 + 10061605615101.

It is an arithmetic number, because the mean of its divisors is an integer number (10061605615101).

Almost surely, 2^{20123211230201} is an apocalyptic number.

It is an amenable number.

20123211230201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123211230201 is an equidigital number, since it uses as much as digits as its factorization.

20123211230201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20123211230201 its reverse (10203211232102), we get a palindrome (30326422462303).

The spelling of 20123211230201 in words is "twenty trillion, one hundred twenty-three billion, two hundred eleven million, two hundred thirty thousand, two hundred one".