211103312012111 has 2 divisors, whose sum is σ = 211103312012112. Its totient is φ = 211103312012110.

The previous prime is 211103312012057. The next prime is 211103312012191. The reversal of 211103312012111 is 111210213301112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211103312012111 - 2⁴⁶ = 140734567834447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211103312012191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105551656006055 + 105551656006056.

It is an arithmetic number, because the mean of its divisors is an integer number (105551656006056).

Almost surely, 2^{211103312012111} is an apocalyptic number.

211103312012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211103312012111 is an equidigital number, since it uses as much as digits as its factorization.

211103312012111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 211103312012111 its reverse (111210213301112), we get a palindrome (322313525313223).

The spelling of 211103312012111 in words is "two hundred eleven trillion, one hundred three billion, three hundred twelve million, twelve thousand, one hundred eleven".