20010123233 has 2 divisors, whose sum is σ = 20010123234. Its totient is φ = 20010123232.

The previous prime is 20010123187. The next prime is 20010123247. The reversal of 20010123233 is 33232101002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14290528849 + 5719594384 = 119543^2 + 75628^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010123233 - 2²⁴ = 19993346017 is a prime.

It is not a weakly prime, because it can be changed into another prime (20010123283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005061616 + 10005061617.

It is an arithmetic number, because the mean of its divisors is an integer number (10005061617).

Almost surely, 2^20010123233 is an apocalyptic number.

It is an amenable number.

20010123233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010123233 is an equidigital number, since it uses as much as digits as its factorization.

20010123233 is an evil number, because the sum of its binary digits is even.

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

Adding to 20010123233 its reverse (33232101002), we get a palindrome (53242224235).

The spelling of 20010123233 in words is "twenty billion, ten million, one hundred twenty-three thousand, two hundred thirty-three".