213000220217 has 2 divisors, whose sum is σ = 213000220218. Its totient is φ = 213000220216.

The previous prime is 213000220211. The next prime is 213000220231. The reversal of 213000220217 is 712022000312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212612287801 + 387932416 = 461099^2 + 19696^2 .

It is a cyclic number.

It is not a de Polignac number, because 213000220217 - 2¹⁴ = 213000203833 is a prime.

It is not a weakly prime, because it can be changed into another prime (213000220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106500110108 + 106500110109.

It is an arithmetic number, because the mean of its divisors is an integer number (106500110109).

Almost surely, 2^213000220217 is an apocalyptic number.

It is an amenable number.

213000220217 is a deficient number, since it is larger than the sum of its proper divisors (1).

213000220217 is an equidigital number, since it uses as much as digits as its factorization.

213000220217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 213000220217 its reverse (712022000312), we get a palindrome (925022220529).

The spelling of 213000220217 in words is "two hundred thirteen billion, two hundred twenty thousand, two hundred seventeen".