212000211217 has 2 divisors, whose sum is σ = 212000211218. Its totient is φ = 212000211216.

The previous prime is 212000211211. The next prime is 212000211229. The reversal of 212000211217 is 712112000212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148983648256 + 63016562961 = 385984^2 + 251031^2 .

It is a cyclic number.

It is not a de Polignac number, because 212000211217 - 2⁷ = 212000211089 is a prime.

It is a super-2 number, since 2×212000211217² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212000211194 and 212000211203.

It is not a weakly prime, because it can be changed into another prime (212000211211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000105608 + 106000105609.

It is an arithmetic number, because the mean of its divisors is an integer number (106000105609).

Almost surely, 2^212000211217 is an apocalyptic number.

It is an amenable number.

212000211217 is a deficient number, since it is larger than the sum of its proper divisors (1).

212000211217 is an equidigital number, since it uses as much as digits as its factorization.

212000211217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 212000211217 its reverse (712112000212), we get a palindrome (924112211429).

The spelling of 212000211217 in words is "two hundred twelve billion, two hundred eleven thousand, two hundred seventeen".