212102020112111 has 2 divisors, whose sum is σ = 212102020112112. Its totient is φ = 212102020112110.

The previous prime is 212102020112071. The next prime is 212102020112119. The reversal of 212102020112111 is 111211020201212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212102020112111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212102020112111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212102020112119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051010056055 + 106051010056056.

It is an arithmetic number, because the mean of its divisors is an integer number (106051010056056).

Almost surely, 2^{212102020112111} is an apocalyptic number.

212102020112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102020112111 is an equidigital number, since it uses as much as digits as its factorization.

212102020112111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212102020112111 its reverse (111211020201212), we get a palindrome (323313040313323).

The spelling of 212102020112111 in words is "two hundred twelve trillion, one hundred two billion, twenty million, one hundred twelve thousand, one hundred eleven".