2012110112221 has 16 divisors (see below), whose sum is σ = 2220244776000. Its totient is φ = 1808188272000.

The previous prime is 2012110112191. The next prime is 2012110112261. The reversal of 2012110112221 is 1222110112102.

It is not a de Polignac number, because 2012110112221 - 2⁷ = 2012110112093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012110112195 and 2012110112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012110112261) 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, 3712255 + ... + 4219603.

It is an arithmetic number, because the mean of its divisors is an integer number (138765298500).

Almost surely, 2^{2012110112221} is an apocalyptic number.

It is an amenable number.

2012110112221 is a deficient number, since it is larger than the sum of its proper divisors (208134663779).

2012110112221 is a wasteful number, since it uses less digits than its factorization.

2012110112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511500.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2012110112221 its reverse (1222110112102), we get a palindrome (3234220224323).

The spelling of 2012110112221 in words is "two trillion, twelve billion, one hundred ten million, one hundred twelve thousand, two hundred twenty-one".