65216101 has 2 divisors, whose sum is σ = 65216102. Its totient is φ = 65216100.

The previous prime is 65216069. The next prime is 65216111. The reversal of 65216101 is 10161256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63984001 + 1232100 = 7999^2 + 1110^2 .

It is a cyclic number.

It is not a de Polignac number, because 65216101 - 2⁵ = 65216069 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65216111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32608050 + 32608051.

It is an arithmetic number, because the mean of its divisors is an integer number (32608051).

Almost surely, 2^65216101 is an apocalyptic number.

It is an amenable number.

65216101 is a deficient number, since it is larger than the sum of its proper divisors (1).

65216101 is an equidigital number, since it uses as much as digits as its factorization.

65216101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 65216101 is about 8075.6486426788. The cubic root of 65216101 is about 402.5176639239.

Adding to 65216101 its reverse (10161256), we get a palindrome (75377357).

The spelling of 65216101 in words is "sixty-five million, two hundred sixteen thousand, one hundred one".