20123001233 has 2 divisors, whose sum is σ = 20123001234. Its totient is φ = 20123001232.

The previous prime is 20123001221. The next prime is 20123001247. The reversal of 20123001233 is 33210032102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10820784529 + 9302216704 = 104023^2 + 96448^2 .

It is a cyclic number.

It is not a de Polignac number, because 20123001233 - 2⁸ = 20123000977 is a prime.

It is not a weakly prime, because it can be changed into another prime (20123001253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061500616 + 10061500617.

It is an arithmetic number, because the mean of its divisors is an integer number (10061500617).

Almost surely, 2^20123001233 is an apocalyptic number.

It is an amenable number.

20123001233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123001233 is an equidigital number, since it uses as much as digits as its factorization.

20123001233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20123001233 its reverse (33210032102), we get a palindrome (53333033335).

The spelling of 20123001233 in words is "twenty billion, one hundred twenty-three million, one thousand, two hundred thirty-three".