2112322212405 has 80 divisors (see below), whose sum is σ = 3809850992640. Its totient is φ = 1119639272832.

The previous prime is 2112322212389. The next prime is 2112322212421. The reversal of 2112322212405 is 5042122232112.

2112322212405 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 32 + 221 + 2 + 405 = 666.

It is an interprime number because it is at equal distance from previous prime (2112322212389) and next prime (2112322212421).

It is not a de Polignac number, because 2112322212405 - 2⁴ = 2112322212389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 300084876 + ... + 300091914.

It is an arithmetic number, because the mean of its divisors is an integer number (47623137408).

Almost surely, 2^{2112322212405} is an apocalyptic number.

It is an amenable number.

2112322212405 is a deficient number, since it is larger than the sum of its proper divisors (1697528780235).

2112322212405 is a wasteful number, since it uses less digits than its factorization.

2112322212405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11512 (or 11503 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 2112322212405 its reverse (5042122232112), we get a palindrome (7154444444517).

The spelling of 2112322212405 in words is "two trillion, one hundred twelve billion, three hundred twenty-two million, two hundred twelve thousand, four hundred five".