2129210585 has 16 divisors (see below), whose sum is σ = 2735121600. Its totient is φ = 1586362176.

The previous prime is 2129210581. The next prime is 2129210599. The reversal of 2129210585 is 5850129212.

It is a cyclic number.

It is not a de Polignac number, because 2129210585 - 2² = 2129210581 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2129210581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184334 + ... + 195543.

It is an arithmetic number, because the mean of its divisors is an integer number (170945100).

Almost surely, 2^2129210585 is an apocalyptic number.

It is an amenable number.

2129210585 is a deficient number, since it is larger than the sum of its proper divisors (605911015).

2129210585 is a wasteful number, since it uses less digits than its factorization.

2129210585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379960.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 2129210585 is about 46143.3698921091. The cubic root of 2129210585 is about 1286.4893801732.

Adding to 2129210585 its reverse (5850129212), we get a palindrome (7979339797).

The spelling of 2129210585 in words is "two billion, one hundred twenty-nine million, two hundred ten thousand, five hundred eighty-five".