20001233233 has 2 divisors, whose sum is σ = 20001233234. Its totient is φ = 20001233232.

The previous prime is 20001233221. The next prime is 20001233249. The reversal of 20001233233 is 33233210002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12975943744 + 7025289489 = 113912^2 + 83817^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001233233 - 2¹⁷ = 20001102161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20001233233.

It is not a weakly prime, because it can be changed into another prime (20001233033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000616616 + 10000616617.

It is an arithmetic number, because the mean of its divisors is an integer number (10000616617).

Almost surely, 2^20001233233 is an apocalyptic number.

It is an amenable number.

20001233233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001233233 is an equidigital number, since it uses as much as digits as its factorization.

20001233233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20001233233 its reverse (33233210002), we get a palindrome (53234443235).

The spelling of 20001233233 in words is "twenty billion, one million, two hundred thirty-three thousand, two hundred thirty-three".