212012201111 has 2 divisors, whose sum is σ = 212012201112. Its totient is φ = 212012201110.

The previous prime is 212012201059. The next prime is 212012201113. The reversal of 212012201111 is 111102210212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212012201111 - 2⁶ = 212012201047 is a prime.

It is a super-2 number, since 2×212012201111² (a number of 23 digits) contains 22 as substring.

Together with 212012201113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012201113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006100555 + 106006100556.

It is an arithmetic number, because the mean of its divisors is an integer number (106006100556).

Almost surely, 2^212012201111 is an apocalyptic number.

212012201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012201111 is an equidigital number, since it uses as much as digits as its factorization.

212012201111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212012201111 its reverse (111102210212), we get a palindrome (323114411323).

The spelling of 212012201111 in words is "two hundred twelve billion, twelve million, two hundred one thousand, one hundred eleven".