2112412212305 has 8 divisors (see below), whose sum is σ = 2540915784744. Its totient is φ = 1685915683200.

The previous prime is 2112412212301. The next prime is 2112412212331. The reversal of 2112412212305 is 5032122142112.

It can be written as a sum of positive squares in 4 ways, for example, as 287492209489 + 1824920002816 = 536183^2 + 1350896^2 .

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

It is not a de Polignac number, because 2112412212305 - 2² = 2112412212301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112412212301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501758516 + ... + 501762725.

It is an arithmetic number, because the mean of its divisors is an integer number (317614473093).

Almost surely, 2^{2112412212305} is an apocalyptic number.

It is an amenable number.

2112412212305 is a deficient number, since it is larger than the sum of its proper divisors (428503572439).

2112412212305 is a wasteful number, since it uses less digits than its factorization.

2112412212305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003521667.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 2112412212305 its reverse (5032122142112), we get a palindrome (7144534354417).

The spelling of 2112412212305 in words is "two trillion, one hundred twelve billion, four hundred twelve million, two hundred twelve thousand, three hundred five".