2121302232 has 48 divisors (see below), whose sum is σ = 6565937040. Its totient is φ = 606086208.

The previous prime is 2121302219. The next prime is 2121302243. The reversal of 2121302232 is 2322031212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2103963 + ... + 2104970.

It is an arithmetic number, because the mean of its divisors is an integer number (136790355).

Almost surely, 2^2121302232 is an apocalyptic number.

It is an amenable number.

2121302232 is an abundant number, since it is smaller than the sum of its proper divisors (4444634808).

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

2121302232 is a wasteful number, since it uses less digits than its factorization.

2121302232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208952 (or 4208945 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2121302232 is about 46057.5968977974. The cubic root of 2121302232 is about 1284.8946366496.

Adding to 2121302232 its reverse (2322031212), we get a palindrome (4443333444).

The spelling of 2121302232 in words is "two billion, one hundred twenty-one million, three hundred two thousand, two hundred thirty-two".