20000233217 has 2 divisors, whose sum is σ = 20000233218. Its totient is φ = 20000233216.

The previous prime is 20000233199. The next prime is 20000233241. The reversal of 20000233217 is 71233200002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17693256256 + 2306976961 = 133016^2 + 48031^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000233217 - 2³² = 15705265921 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000233277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000116608 + 10000116609.

It is an arithmetic number, because the mean of its divisors is an integer number (10000116609).

Almost surely, 2^20000233217 is an apocalyptic number.

It is an amenable number.

20000233217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000233217 is an equidigital number, since it uses as much as digits as its factorization.

20000233217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

Adding to 20000233217 its reverse (71233200002), we get a palindrome (91233433219).

The spelling of 20000233217 in words is "twenty billion, two hundred thirty-three thousand, two hundred seventeen".