2112021110121 has 32 divisors (see below), whose sum is σ = 3038600492928. Its totient is φ = 1297154234880.

The previous prime is 2112021110027. The next prime is 2112021110141. The reversal of 2112021110121 is 1210111202112.

It is a happy number.

It is not a de Polignac number, because 2112021110121 - 2¹⁷ = 2112020979049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2112021110121.

It is not an unprimeable number, because it can be changed into a prime (2112021110141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168725955 + ... + 168738471.

It is an arithmetic number, because the mean of its divisors is an integer number (94956265404).

Almost surely, 2^{2112021110121} is an apocalyptic number.

It is an amenable number.

2112021110121 is a deficient number, since it is larger than the sum of its proper divisors (926579382807).

2112021110121 is a wasteful number, since it uses less digits than its factorization.

2112021110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20681.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2112021110121 its reverse (1210111202112), we get a palindrome (3322132312233).

The spelling of 2112021110121 in words is "two trillion, one hundred twelve billion, twenty-one million, one hundred ten thousand, one hundred twenty-one".