2112222212321 has 8 divisors (see below), whose sum is σ = 2274719912640. Its totient is φ = 1949727236112.

The previous prime is 2112222212297. The next prime is 2112222212339. The reversal of 2112222212321 is 1232122222112.

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

It is a cyclic number.

It is not a de Polignac number, because 2112222212321 - 2²² = 2112218018017 is a prime.

It is a super-2 number, since 2×2112222212321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112222212351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102370 + ... + 2332308.

It is an arithmetic number, because the mean of its divisors is an integer number (284339989080).

Almost surely, 2^{2112222212321} is an apocalyptic number.

It is an amenable number.

2112222212321 is a deficient number, since it is larger than the sum of its proper divisors (162497700319).

2112222212321 is a wasteful number, since it uses less digits than its factorization.

2112222212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362055.

The product of its digits is 768, while the sum is 23.

Adding to 2112222212321 its reverse (1232122222112), we get a palindrome (3344344434433).

The spelling of 2112222212321 in words is "two trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twelve thousand, three hundred twenty-one".