212100121122201 has 16 divisors (see below), whose sum is σ = 338393355637120. Its totient is φ = 130523151459600.

The previous prime is 212100121122193. The next prime is 212100121122203. The reversal of 212100121122201 is 102221121001212.

212100121122201 is a `hidden beast` number, since 21 + 210 + 0 + 1 + 211 + 2 + 220 + 1 = 666.

It is not a de Polignac number, because 212100121122201 - 2³ = 212100121122193 is a prime.

It is a super-2 number, since 2×212100121122201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100121122203) 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, 302136924325 + ... + 302136925026.

It is an arithmetic number, because the mean of its divisors is an integer number (21149584727320).

Almost surely, 2^{212100121122201} is an apocalyptic number.

It is an amenable number.

212100121122201 is a deficient number, since it is larger than the sum of its proper divisors (126293234514919).

212100121122201 is a wasteful number, since it uses less digits than its factorization.

212100121122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604273849373 (or 604273849367 counting only the distinct ones).

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

Adding to 212100121122201 its reverse (102221121001212), we get a palindrome (314321242123413).

The spelling of 212100121122201 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred one".