2112402505 has 8 divisors (see below), whose sum is σ = 2544747912. Its totient is φ = 1683345408.

The previous prime is 2112402499. The next prime is 2112402517. The reversal of 2112402505 is 5052042112.

It can be written as a sum of positive squares in 4 ways, for example, as 1426119696 + 686282809 = 37764^2 + 26197^2 .

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 2112402505 - 2⁷ = 2112402377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820662 + ... + 823231.

It is an arithmetic number, because the mean of its divisors is an integer number (318093489).

Almost surely, 2^2112402505 is an apocalyptic number.

It is an amenable number.

2112402505 is a deficient number, since it is larger than the sum of its proper divisors (432345407).

2112402505 is a wasteful number, since it uses less digits than its factorization.

2112402505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644155.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2112402505 is about 45960.8801591092. The cubic root of 2112402505 is about 1283.0952324149.

Adding to 2112402505 its reverse (5052042112), we get a palindrome (7164444617).

The spelling of 2112402505 in words is "two billion, one hundred twelve million, four hundred two thousand, five hundred five".