2112122605 has 8 divisors (see below), whose sum is σ = 2559642264. Its totient is φ = 1672968000.

The previous prime is 2112122603. The next prime is 2112122609. The reversal of 2112122605 is 5062212112.

2112122605 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1228011849 + 884110756 = 35043^2 + 29734^2 .

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

It is not a de Polignac number, because 2112122605 - 2¹ = 2112122603 is a prime.

It is a super-2 number, since 2×2112122605² = 8922123797103972050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112122603) 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, 2090706 + ... + 2091715.

It is an arithmetic number, because the mean of its divisors is an integer number (319955283).

Almost surely, 2^2112122605 is an apocalyptic number.

It is an amenable number.

2112122605 is a deficient number, since it is larger than the sum of its proper divisors (447519659).

2112122605 is a wasteful number, since it uses less digits than its factorization.

2112122605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182527.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2112122605 is about 45957.8350773837. The cubic root of 2112122605 is about 1283.0385585221.

Adding to 2112122605 its reverse (5062212112), we get a palindrome (7174334717).

The spelling of 2112122605 in words is "two billion, one hundred twelve million, one hundred twenty-two thousand, six hundred five".