201201111101201 has 2 divisors, whose sum is σ = 201201111101202. Its totient is φ = 201201111101200.

The previous prime is 201201111101141. The next prime is 201201111101203. The reversal of 201201111101201 is 102101111102102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197362740502225 + 3838370598976 = 14048585^2 + 1959176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201201111101201 is a prime.

Together with 201201111101203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201201111101203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600555550600 + 100600555550601.

It is an arithmetic number, because the mean of its divisors is an integer number (100600555550601).

Almost surely, 2^{201201111101201} is an apocalyptic number.

It is an amenable number.

201201111101201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201201111101201 is an equidigital number, since it uses as much as digits as its factorization.

201201111101201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201201111101201 its reverse (102101111102102), we get a palindrome (303302222203303).

Subtracting from 201201111101201 its reverse (102101111102102), we obtain a palindrome (99099999999099).

The spelling of 201201111101201 in words is "two hundred one trillion, two hundred one billion, one hundred eleven million, one hundred one thousand, two hundred one".