212120002112101 has 16 divisors (see below), whose sum is σ = 224830271376000. Its totient is φ = 199564908798528.

The previous prime is 212120002112093. The next prime is 212120002112107. The reversal of 212120002112101 is 101211200021212.

It is a cyclic number.

It is not a de Polignac number, because 212120002112101 - 2³ = 212120002112093 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 (212120002112107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5483680 + ... + 21314566.

It is an arithmetic number, because the mean of its divisors is an integer number (14051891961000).

Almost surely, 2^{212120002112101} is an apocalyptic number.

It is an amenable number.

212120002112101 is a deficient number, since it is larger than the sum of its proper divisors (12710269263899).

212120002112101 is a wasteful number, since it uses less digits than its factorization.

212120002112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15835788.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212120002112101 its reverse (101211200021212), we get a palindrome (313331202133313).

The spelling of 212120002112101 in words is "two hundred twelve trillion, one hundred twenty billion, two million, one hundred twelve thousand, one hundred one".