2181522032 has 20 divisors (see below), whose sum is σ = 4410469200. Its totient is φ = 1043336448.

The previous prime is 2181522011. The next prime is 2181522043. The reversal of 2181522032 is 2302251812.

It is a super-2 number, since 2×2181522032² = 9518076752202818048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2181521992 and 2181522010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2963657 + ... + 2964392.

It is an arithmetic number, because the mean of its divisors is an integer number (220523460).

Almost surely, 2^2181522032 is an apocalyptic number.

It is an amenable number.

2181522032 is an abundant number, since it is smaller than the sum of its proper divisors (2228947168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2181522032 is a wasteful number, since it uses less digits than its factorization.

2181522032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5928080 (or 5928074 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2181522032 is about 46706.7664477001. The cubic root of 2181522032 is about 1296.9399489934.

Adding to 2181522032 its reverse (2302251812), we get a palindrome (4483773844).

The spelling of 2181522032 in words is "two billion, one hundred eighty-one million, five hundred twenty-two thousand, thirty-two".