201212012201111 has 2 divisors, whose sum is σ = 201212012201112. Its totient is φ = 201212012201110.

The previous prime is 201212012201107. The next prime is 201212012201113. The reversal of 201212012201111 is 111102210212102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201212012201111 - 2² = 201212012201107 is a prime.

It is a super-2 number, since 2×201212012201111² (a number of 29 digits) contains 22 as substring.

Together with 201212012201113, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201212012201111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201212012201113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606006100555 + 100606006100556.

It is an arithmetic number, because the mean of its divisors is an integer number (100606006100556).

Almost surely, 2^{201212012201111} is an apocalyptic number.

201212012201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212012201111 is an equidigital number, since it uses as much as digits as its factorization.

201212012201111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201212012201111 its reverse (111102210212102), we get a palindrome (312314222413213).

The spelling of 201212012201111 in words is "two hundred one trillion, two hundred twelve billion, twelve million, two hundred one thousand, one hundred eleven".