20001233313223 has 2 divisors, whose sum is σ = 20001233313224. Its totient is φ = 20001233313222.

The previous prime is 20001233313203. The next prime is 20001233313227. The reversal of 20001233313223 is 32231333210002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001233313223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001233313227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000616656611 + 10000616656612.

It is an arithmetic number, because the mean of its divisors is an integer number (10000616656612).

Almost surely, 2^{20001233313223} is an apocalyptic number.

20001233313223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001233313223 is an equidigital number, since it uses as much as digits as its factorization.

20001233313223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20001233313223 its reverse (32231333210002), we get a palindrome (52232566523225).

The spelling of 20001233313223 in words is "twenty trillion, one billion, two hundred thirty-three million, three hundred thirteen thousand, two hundred twenty-three".