2011212011111 has 2 divisors, whose sum is σ = 2011212011112. Its totient is φ = 2011212011110.

The previous prime is 2011212011059. The next prime is 2011212011129. The reversal of 2011212011111 is 1111102121102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011212011111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011212010111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005606005555 + 1005606005556.

It is an arithmetic number, because the mean of its divisors is an integer number (1005606005556).

Almost surely, 2^{2011212011111} is an apocalyptic number.

2011212011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011212011111 is an equidigital number, since it uses as much as digits as its factorization.

2011212011111 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 2011212011111 its reverse (1111102121102), we get a palindrome (3122314132213).

The spelling of 2011212011111 in words is "two trillion, eleven billion, two hundred twelve million, eleven thousand, one hundred eleven".