212011222112121 has 8 divisors (see below), whose sum is σ = 285183236823840. Its totient is φ = 140090011070912.

The previous prime is 212011222112057. The next prime is 212011222112161. The reversal of 212011222112121 is 121211222110212.

212011222112121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212011222112121 - 2⁶ = 212011222112057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212011222112161) 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, 312700917231 + ... + 312700917908.

It is an arithmetic number, because the mean of its divisors is an integer number (35647904602980).

Almost surely, 2^{212011222112121} is an apocalyptic number.

It is an amenable number.

212011222112121 is a deficient number, since it is larger than the sum of its proper divisors (73172014711719).

212011222112121 is a wasteful number, since it uses less digits than its factorization.

212011222112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625401835255.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212011222112121 its reverse (121211222110212), we get a palindrome (333222444222333).

The spelling of 212011222112121 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twenty-one".