212112121012111 has 8 divisors (see below), whose sum is σ = 214181055202400. Its totient is φ = 210045422302560.

The previous prime is 212112121012093. The next prime is 212112121012147. The reversal of 212112121012111 is 111210121211212.

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

It is a cyclic number.

It is not a de Polignac number, because 212112121012111 - 2⁷ = 212112121011983 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 (212112121012171) 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 7 ways as a sum of consecutive naturals, for example, 558679491 + ... + 559059028.

It is an arithmetic number, because the mean of its divisors is an integer number (26772631900300).

Almost surely, 2^{212112121012111} is an apocalyptic number.

212112121012111 is a deficient number, since it is larger than the sum of its proper divisors (2068934190289).

212112121012111 is a wasteful number, since it uses less digits than its factorization.

212112121012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117740369.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 212112121012111 its reverse (111210121211212), we get a palindrome (323322242223323).

The spelling of 212112121012111 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred twenty-one million, twelve thousand, one hundred eleven".