212112102022121 has 8 divisors (see below), whose sum is σ = 242421415339584. Its totient is φ = 181804684818960.

The previous prime is 212112102022099. The next prime is 212112102022141. The reversal of 212112102022121 is 121220201211212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212112102022121 - 2³⁴ = 212094922152937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212112102022093 and 212112102022102.

It is not an unprimeable number, because it can be changed into a prime (212112102022141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473788850 + ... + 474236331.

It is an arithmetic number, because the mean of its divisors is an integer number (30302676917448).

Almost surely, 2^{212112102022121} is an apocalyptic number.

It is an amenable number.

212112102022121 is a deficient number, since it is larger than the sum of its proper divisors (30309313317463).

212112102022121 is an equidigital number, since it uses as much as digits as its factorization.

212112102022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948057151.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212112102022121 its reverse (121220201211212), we get a palindrome (333332303233333).

The spelling of 212112102022121 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred two million, twenty-two thousand, one hundred twenty-one".