212011120112121 has 48 divisors (see below), whose sum is σ = 335175572579328. Its totient is φ = 128069551461600.

The previous prime is 212011120112111. The next prime is 212011120112147. The reversal of 212011120112121 is 121211021110212.

It is a happy number.

212011120112121 is a `hidden beast` number, since 212 + 0 + 111 + 201 + 121 + 21 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-212011120112121 is a prime.

It is a super-2 number, since 2×212011120112121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212011120112094 and 212011120112103.

It is not an unprimeable number, because it can be changed into a prime (212011120112111) 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 47 ways as a sum of consecutive naturals, for example, 458124570 + ... + 458587116.

It is an arithmetic number, because the mean of its divisors is an integer number (6982824428736).

Almost surely, 2^{212011120112121} is an apocalyptic number.

It is an amenable number.

212011120112121 is a deficient number, since it is larger than the sum of its proper divisors (123164452467207).

212011120112121 is a wasteful number, since it uses less digits than its factorization.

212011120112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477762 (or 477759 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212011120112121 its reverse (121211021110212), we get a palindrome (333222141222333).

The spelling of 212011120112121 in words is "two hundred twelve trillion, eleven billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty-one".