212011211112111 has 96 divisors (see below), whose sum is σ = 328361185152000. Its totient is φ = 131569173275904.

The previous prime is 212011211112097. The next prime is 212011211112121. The reversal of 212011211112111 is 111211112110212.

212011211112111 is a `hidden beast` number, since 21 + 201 + 121 + 111 + 211 + 1 = 666.

It is not a de Polignac number, because 212011211112111 - 2¹⁰ = 212011211111087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011211112121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3350494005 + ... + 3350557281.

It is an arithmetic number, because the mean of its divisors is an integer number (3420429012000).

Almost surely, 2^{212011211112111} is an apocalyptic number.

212011211112111 is a deficient number, since it is larger than the sum of its proper divisors (116349974039889).

212011211112111 is a wasteful number, since it uses less digits than its factorization.

212011211112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67213 (or 67210 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 212011211112111 its reverse (111211112110212), we get a palindrome (323222323222323).

The spelling of 212011211112111 in words is "two hundred twelve trillion, eleven billion, two hundred eleven million, one hundred twelve thousand, one hundred eleven".