2122450405 has 8 divisors (see below), whose sum is σ = 2634766200. Its totient is φ = 1639409856.

The previous prime is 2122450387. The next prime is 2122450417. The reversal of 2122450405 is 5040542212.

It can be written as a sum of positive squares in 4 ways, for example, as 637966564 + 1484483841 = 25258^2 + 38529^2 .

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 2122450405 - 2²⁵ = 2088895973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122450405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7318650 + ... + 7318939.

It is an arithmetic number, because the mean of its divisors is an integer number (329345775).

Almost surely, 2^2122450405 is an apocalyptic number.

It is an amenable number.

2122450405 is a deficient number, since it is larger than the sum of its proper divisors (512315795).

2122450405 is a wasteful number, since it uses less digits than its factorization.

2122450405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14637623.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2122450405 is about 46070.0597459999. The cubic root of 2122450405 is about 1285.1264149126.

Adding to 2122450405 its reverse (5040542212), we get a palindrome (7162992617).

The spelling of 2122450405 in words is "two billion, one hundred twenty-two million, four hundred fifty thousand, four hundred five".