212102210012121 has 24 divisors (see below), whose sum is σ = 359931023053056. Its totient is φ = 118658579027040.

The previous prime is 212102210012113. The next prime is 212102210012171. The reversal of 212102210012121 is 121210012201212.

212102210012121 is a `hidden beast` number, since 21 + 210 + 221 + 0 + 0 + 1 + 212 + 1 = 666.

212102210012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212102210012121 - 2³ = 212102210012113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212102210012094 and 212102210012103.

It is not an unprimeable number, because it can be changed into a prime (212102210012171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82401789705 + ... + 82401792278.

It is an arithmetic number, because the mean of its divisors is an integer number (14997125960544).

Almost surely, 2^{212102210012121} is an apocalyptic number.

It is an amenable number.

212102210012121 is a deficient number, since it is larger than the sum of its proper divisors (147828813040935).

212102210012121 is a wasteful number, since it uses less digits than its factorization.

212102210012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164803582013 (or 164803582010 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212102210012121 its reverse (121210012201212), we get a palindrome (333312222213333).

The spelling of 212102210012121 in words is "two hundred twelve trillion, one hundred two billion, two hundred ten million, twelve thousand, one hundred twenty-one".