2122815889 has 16 divisors (see below), whose sum is σ = 2241937152. Its totient is φ = 2006028288.

The previous prime is 2122815887. The next prime is 2122815901. The reversal of 2122815889 is 9885182212.

It is a cyclic number.

It is not a de Polignac number, because 2122815889 - 2¹ = 2122815887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122815887) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1366137 + ... + 1367689.

It is an arithmetic number, because the mean of its divisors is an integer number (140121072).

Almost surely, 2^2122815889 is an apocalyptic number.

It is an amenable number.

2122815889 is a deficient number, since it is larger than the sum of its proper divisors (119121263).

2122815889 is a wasteful number, since it uses less digits than its factorization.

2122815889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256.

The product of its digits is 184320, while the sum is 46.

The square root of 2122815889 is about 46074.0261861279. The cubic root of 2122815889 is about 1285.2001765396.

The spelling of 2122815889 in words is "two billion, one hundred twenty-two million, eight hundred fifteen thousand, eight hundred eighty-nine".