201111212201 has 2 divisors, whose sum is σ = 201111212202. Its totient is φ = 201111212200.

The previous prime is 201111212143. The next prime is 201111212243. The reversal of 201111212201 is 102212111102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106432537600 + 94678674601 = 326240^2 + 307699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201111212201 is a prime.

It is not a weakly prime, because it can be changed into another prime (201111212251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555606100 + 100555606101.

It is an arithmetic number, because the mean of its divisors is an integer number (100555606101).

Almost surely, 2^201111212201 is an apocalyptic number.

It is an amenable number.

201111212201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111212201 is an equidigital number, since it uses as much as digits as its factorization.

201111212201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201111212201 its reverse (102212111102), we get a palindrome (303323323303).

The spelling of 201111212201 in words is "two hundred one billion, one hundred eleven million, two hundred twelve thousand, two hundred one".