212112111010111 has 16 divisors (see below), whose sum is σ = 233368803964800. Its totient is φ = 191564050353408.

The previous prime is 212112111010087. The next prime is 212112111010171. The reversal of 212112111010111 is 111010111211212.

It is a cyclic number.

It is not a de Polignac number, because 212112111010111 - 2³⁷ = 211974672056639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112111010171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57891846 + ... + 61446643.

It is an arithmetic number, because the mean of its divisors is an integer number (14585550247800).

Almost surely, 2^{212112111010111} is an apocalyptic number.

212112111010111 is a deficient number, since it is larger than the sum of its proper divisors (21256692954689).

212112111010111 is a wasteful number, since it uses less digits than its factorization.

212112111010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119341458.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 212112111010111 its reverse (111010111211212), we get a palindrome (323122222221323).

The spelling of 212112111010111 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred eleven million, ten thousand, one hundred eleven".