20000101217 has 2 divisors, whose sum is σ = 20000101218. Its totient is φ = 20000101216.

The previous prime is 20000101213. The next prime is 20000101223. The reversal of 20000101217 is 71210100002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18989115601 + 1010985616 = 137801^2 + 31796^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000101217 - 2² = 20000101213 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000101213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000050608 + 10000050609.

It is an arithmetic number, because the mean of its divisors is an integer number (10000050609).

Almost surely, 2^20000101217 is an apocalyptic number.

It is an amenable number.

20000101217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000101217 is an equidigital number, since it uses as much as digits as its factorization.

20000101217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 14.

Adding to 20000101217 its reverse (71210100002), we get a palindrome (91210201219).

The spelling of 20000101217 in words is "twenty billion, one hundred one thousand, two hundred seventeen".