2112313221321 has 16 divisors (see below), whose sum is σ = 2822041844736. Its totient is φ = 1405399381776.

The previous prime is 2112313221307. The next prime is 2112313221329. The reversal of 2112313221321 is 1231223132112.

It is not a de Polignac number, because 2112313221321 - 2¹¹ = 2112313219273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2112313221291 and 2112313221300.

It is not an unprimeable number, because it can be changed into a prime (2112313221329) 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, 2834316 + ... + 3501138.

It is an arithmetic number, because the mean of its divisors is an integer number (176377615296).

Almost surely, 2^{2112313221321} is an apocalyptic number.

It is an amenable number.

2112313221321 is a deficient number, since it is larger than the sum of its proper divisors (709728623415).

2112313221321 is a wasteful number, since it uses less digits than its factorization.

2112313221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668932.

The product of its digits is 864, while the sum is 24.

Adding to 2112313221321 its reverse (1231223132112), we get a palindrome (3343536353433).

The spelling of 2112313221321 in words is "two trillion, one hundred twelve billion, three hundred thirteen million, two hundred twenty-one thousand, three hundred twenty-one".