212212012111121 has 8 divisors (see below), whose sum is σ = 231627350481984. Its totient is φ = 192817229951920.

The previous prime is 212212012111081. The next prime is 212212012111159. The reversal of 212212012111121 is 121111210212212.

It is a happy number.

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 212212012111121 - 2¹⁰ = 212212012110097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212212012111093 and 212212012111102.

It is not an unprimeable number, because it can be changed into a prime (212212012111181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5139031325 + ... + 5139072618.

It is an arithmetic number, because the mean of its divisors is an integer number (28953418810248).

Almost surely, 2^{212212012111121} is an apocalyptic number.

It is an amenable number.

212212012111121 is a deficient number, since it is larger than the sum of its proper divisors (19415338370863).

212212012111121 is a wasteful number, since it uses less digits than its factorization.

212212012111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10278105831.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 212212012111121 its reverse (121111210212212), we get a palindrome (333323222323333).

It can be divided in two parts, 2122120 and 12111121, that added together give a palindrome (14233241).

The spelling of 212212012111121 in words is "two hundred twelve trillion, two hundred twelve billion, twelve million, one hundred eleven thousand, one hundred twenty-one".