2161510222 has 16 divisors (see below), whose sum is σ = 3260146032. Its totient is φ = 1074810240.

The previous prime is 2161510207. The next prime is 2161510223. The reversal of 2161510222 is 2220151612.

It is a junction number, because it is equal to n+sod(n) for n = 2161510193 and 2161510202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161510223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312918 + ... + 319750.

It is an arithmetic number, because the mean of its divisors is an integer number (203759127).

Almost surely, 2^2161510222 is an apocalyptic number.

2161510222 is a deficient number, since it is larger than the sum of its proper divisors (1098635810).

2161510222 is a wasteful number, since it uses less digits than its factorization.

2161510222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683.

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

The square root of 2161510222 is about 46492.0447173492. The cubic root of 2161510222 is about 1292.9620100064.

Adding to 2161510222 its reverse (2220151612), we get a palindrome (4381661834).

The spelling of 2161510222 in words is "two billion, one hundred sixty-one million, five hundred ten thousand, two hundred twenty-two".