212011210112111 has 4 divisors (see below), whose sum is σ = 212011247448000. Its totient is φ = 212011172776224.

The previous prime is 212011210112081. The next prime is 212011210112113. The reversal of 212011210112111 is 111211012110212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212011210112111 - 2¹⁰ = 212011210111087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212011210112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011210112113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8189786 + ... + 22160663.

It is an arithmetic number, because the mean of its divisors is an integer number (53002811862000).

Almost surely, 2^{212011210112111} is an apocalyptic number.

212011210112111 is a deficient number, since it is larger than the sum of its proper divisors (37335889).

212011210112111 is an equidigital number, since it uses as much as digits as its factorization.

212011210112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37335888.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 212011210112111 its reverse (111211012110212), we get a palindrome (323222222222323).

The spelling of 212011210112111 in words is "two hundred twelve trillion, eleven billion, two hundred ten million, one hundred twelve thousand, one hundred eleven".