212102220110121 has 36 divisors (see below), whose sum is σ = 341779836785296. Its totient is φ = 126628191066960.

The previous prime is 212102220110113. The next prime is 212102220110147. The reversal of 212102220110121 is 121011022201212.

212102220110121 is a `hidden beast` number, since 2 + 1 + 210 + 2 + 220 + 110 + 121 = 666.

It is not a de Polignac number, because 212102220110121 - 2³ = 212102220110113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212102220110094 and 212102220110103.

It is not an unprimeable number, because it can be changed into a prime (212102220110111) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1453418671 + ... + 1453564596.

Almost surely, 2^{212102220110121} is an apocalyptic number.

It is an amenable number.

212102220110121 is a deficient number, since it is larger than the sum of its proper divisors (129677616675175).

212102220110121 is a wasteful number, since it uses less digits than its factorization.

212102220110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906983362 (or 2906983348 counting only the distinct ones).

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

Adding to 212102220110121 its reverse (121011022201212), we get a palindrome (333113242311333).

The spelling of 212102220110121 in words is "two hundred twelve trillion, one hundred two billion, two hundred twenty million, one hundred ten thousand, one hundred twenty-one".