201216077 has 2 divisors, whose sum is σ = 201216078. Its totient is φ = 201216076.

The previous prime is 201216053. The next prime is 201216083. The reversal of 201216077 is 770612102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190053796 + 11162281 = 13786^2 + 3341^2 .

It is a cyclic number.

It is not a de Polignac number, because 201216077 - 2⁶ = 201216013 is a prime.

It is a Chen prime.

It is equal to p_11142638 and since 201216077 and 11142638 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201216377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100608038 + 100608039.

It is an arithmetic number, because the mean of its divisors is an integer number (100608039).

Almost surely, 2^201216077 is an apocalyptic number.

It is an amenable number.

201216077 is a deficient number, since it is larger than the sum of its proper divisors (1).

201216077 is an equidigital number, since it uses as much as digits as its factorization.

201216077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 201216077 is about 14185.0652800754. The cubic root of 201216077 is about 585.9864303179.

Adding to 201216077 its reverse (770612102), we get a palindrome (971828179).

The spelling of 201216077 in words is "two hundred one million, two hundred sixteen thousand, seventy-seven".