212101121110111 has 2 divisors, whose sum is σ = 212101121110112. Its totient is φ = 212101121110110.

The previous prime is 212101121110031. The next prime is 212101121110129. The reversal of 212101121110111 is 111011121101212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212101121110111 - 2³⁵ = 212066761371743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212101121110141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050560555055 + 106050560555056.

It is an arithmetic number, because the mean of its divisors is an integer number (106050560555056).

Almost surely, 2^{212101121110111} is an apocalyptic number.

212101121110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212101121110111 is an equidigital number, since it uses as much as digits as its factorization.

212101121110111 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 16.

Adding to 212101121110111 its reverse (111011121101212), we get a palindrome (323112242211323).

The spelling of 212101121110111 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty-one million, one hundred ten thousand, one hundred eleven".