212012101012111 has 4 divisors (see below), whose sum is σ = 212015330163792. Its totient is φ = 212008871860432.

The previous prime is 212012101011967. The next prime is 212012101012177. The reversal of 212012101012111 is 111210101210212.

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 212012101012111 - 2⁴¹ = 209813077756559 is a prime.

It is a super-2 number, since 2×212012101012111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012101010111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1614477355 + ... + 1614608668.

It is an arithmetic number, because the mean of its divisors is an integer number (53003832540948).

Almost surely, 2^{212012101012111} is an apocalyptic number.

212012101012111 is a deficient number, since it is larger than the sum of its proper divisors (3229151681).

212012101012111 is an equidigital number, since it uses as much as digits as its factorization.

212012101012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229151680.

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

Adding to 212012101012111 its reverse (111210101210212), we get a palindrome (323222202222323).

The spelling of 212012101012111 in words is "two hundred twelve trillion, twelve billion, one hundred one million, twelve thousand, one hundred eleven".