20120410217 has 2 divisors, whose sum is σ = 20120410218. Its totient is φ = 20120410216.

The previous prime is 20120410187. The next prime is 20120410237. The reversal of 20120410217 is 71201402102.

It is an a-pointer prime, because the next prime (20120410237) can be obtained adding 20120410217 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11764439296 + 8355970921 = 108464^2 + 91411^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120410217 - 2²⁴ = 20103633001 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120410237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060205108 + 10060205109.

It is an arithmetic number, because the mean of its divisors is an integer number (10060205109).

Almost surely, 2^20120410217 is an apocalyptic number.

It is an amenable number.

20120410217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120410217 is an equidigital number, since it uses as much as digits as its factorization.

20120410217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 20120410217 its reverse (71201402102), we get a palindrome (91321812319).

The spelling of 20120410217 in words is "twenty billion, one hundred twenty million, four hundred ten thousand, two hundred seventeen".