212704407197 has 2 divisors, whose sum is σ = 212704407198. Its totient is φ = 212704407196.

The previous prime is 212704407187. The next prime is 212704407239. The reversal of 212704407197 is 791704407212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212282269081 + 422138116 = 460741^2 + 20546^2 .

It is a cyclic number.

It is not a de Polignac number, because 212704407197 - 2¹² = 212704403101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212704407187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106352203598 + 106352203599.

It is an arithmetic number, because the mean of its divisors is an integer number (106352203599).

Almost surely, 2^212704407197 is an apocalyptic number.

It is an amenable number.

212704407197 is a deficient number, since it is larger than the sum of its proper divisors (1).

212704407197 is an equidigital number, since it uses as much as digits as its factorization.

212704407197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 212704407197 in words is "two hundred twelve billion, seven hundred four million, four hundred seven thousand, one hundred ninety-seven".