201216927697 has 2 divisors, whose sum is σ = 201216927698. Its totient is φ = 201216927696.

The previous prime is 201216927683. The next prime is 201216927719. The reversal of 201216927697 is 796729612102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200098760976 + 1118166721 = 447324^2 + 33439^2 .

It is a cyclic number.

It is not a de Polignac number, because 201216927697 - 2¹¹ = 201216925649 is a prime.

It is a super-3 number, since 3×201216927697³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (201216928697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100608463848 + 100608463849.

It is an arithmetic number, because the mean of its divisors is an integer number (100608463849).

Almost surely, 2^201216927697 is an apocalyptic number.

It is an amenable number.

201216927697 is a deficient number, since it is larger than the sum of its proper divisors (1).

201216927697 is an equidigital number, since it uses as much as digits as its factorization.

201216927697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 201216927697 in words is "two hundred one billion, two hundred sixteen million, nine hundred twenty-seven thousand, six hundred ninety-seven".