212102112012111 has 24 divisors (see below), whose sum is σ = 325687453593840. Its totient is φ = 132632899632000.

The previous prime is 212102112012103. The next prime is 212102112012143. The reversal of 212102112012111 is 111210211201212.

It is a happy number.

212102112012111 is a `hidden beast` number, since 21 + 21 + 0 + 211 + 201 + 211 + 1 = 666.

It is not a de Polignac number, because 212102112012111 - 2³ = 212102112012103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102112012101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6140394750 + ... + 6140429291.

It is an arithmetic number, because the mean of its divisors is an integer number (13570310566410).

Almost surely, 2^{212102112012111} is an apocalyptic number.

212102112012111 is a deficient number, since it is larger than the sum of its proper divisors (113585341581729).

212102112012111 is a wasteful number, since it uses less digits than its factorization.

212102112012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12280824167 (or 12280824164 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212102112012111 its reverse (111210211201212), we get a palindrome (323312323213323).

It can be divided in two parts, 21210211201211 and 1, that added together give a palindrome (21210211201212).

The spelling of 212102112012111 in words is "two hundred twelve trillion, one hundred two billion, one hundred twelve million, twelve thousand, one hundred eleven".