2112422011121 has 4 divisors (see below), whose sum is σ = 2112438902244. Its totient is φ = 2112405120000.

The previous prime is 2112422011109. The next prime is 2112422011127. The reversal of 2112422011121 is 1211102242112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 577638000625 + 1534784010496 = 760025^2 + 1238864^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112422011121 - 2³⁸ = 1837544104177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112422011093 and 2112422011102.

It is not an unprimeable number, because it can be changed into a prime (2112422011127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8256560 + ... + 8508561.

It is an arithmetic number, because the mean of its divisors is an integer number (528109725561).

Almost surely, 2^{2112422011121} is an apocalyptic number.

It is an amenable number.

2112422011121 is a deficient number, since it is larger than the sum of its proper divisors (16891123).

2112422011121 is a wasteful number, since it uses less digits than its factorization.

2112422011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16891122.

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

Adding to 2112422011121 its reverse (1211102242112), we get a palindrome (3323524253233).

The spelling of 2112422011121 in words is "two trillion, one hundred twelve billion, four hundred twenty-two million, eleven thousand, one hundred twenty-one".