212112122000111 has 4 divisors (see below), whose sum is σ = 212411292835800. Its totient is φ = 211812951164424.

The previous prime is 212112122000039. The next prime is 212112122000131. The reversal of 212112122000111 is 111000221211212.

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 212112122000111 - 2⁴² = 207714075489007 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 212112122000111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112122000131) 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, 149585416781 + ... + 149585418198.

It is an arithmetic number, because the mean of its divisors is an integer number (53102823208950).

Almost surely, 2^{212112122000111} is an apocalyptic number.

212112122000111 is a deficient number, since it is larger than the sum of its proper divisors (299170835689).

212112122000111 is an equidigital number, since it uses as much as digits as its factorization.

212112122000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299170835688.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212112122000111 its reverse (111000221211212), we get a palindrome (323112343211323).

The spelling of 212112122000111 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred twenty-two million, one hundred eleven", and thus it is an aban number.