212102120001111 has 8 divisors (see below), whose sum is σ = 299438287060464. Its totient is φ = 133083683137920.

The previous prime is 212102120001103. The next prime is 212102120001113. The reversal of 212102120001111 is 111100021201212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212102120001111 - 2³ = 212102120001103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102120001113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079432548980 + ... + 2079432549081.

It is an arithmetic number, because the mean of its divisors is an integer number (37429785882558).

Almost surely, 2^{212102120001111} is an apocalyptic number.

212102120001111 is a deficient number, since it is larger than the sum of its proper divisors (87336167059353).

212102120001111 is a wasteful number, since it uses less digits than its factorization.

212102120001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158865098081.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212102120001111 its reverse (111100021201212), we get a palindrome (323202141202323).

The spelling of 212102120001111 in words is "two hundred twelve trillion, one hundred two billion, one hundred twenty million, one thousand, one hundred eleven".