212013201217 has 2 divisors, whose sum is σ = 212013201218. Its totient is φ = 212013201216.

The previous prime is 212013201181. The next prime is 212013201223. The reversal of 212013201217 is 712102310212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148248870961 + 63764330256 = 385031^2 + 252516^2 .

It is a cyclic number.

It is not a de Polignac number, because 212013201217 - 2²³ = 212004812609 is a prime.

It is not a weakly prime, because it can be changed into another prime (212013201227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006600608 + 106006600609.

It is an arithmetic number, because the mean of its divisors is an integer number (106006600609).

Almost surely, 2^212013201217 is an apocalyptic number.

It is an amenable number.

212013201217 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013201217 is an equidigital number, since it uses as much as digits as its factorization.

212013201217 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 22.

Adding to 212013201217 its reverse (712102310212), we get a palindrome (924115511429).

The spelling of 212013201217 in words is "two hundred twelve billion, thirteen million, two hundred one thousand, two hundred seventeen".