2121333432 has 64 divisors (see below), whose sum is σ = 5733379200. Its totient is φ = 651784320.

The previous prime is 2121333407. The next prime is 2121333437. The reversal of 2121333432 is 2343331212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121333437) 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, 45994 + ... + 79737.

It is an arithmetic number, because the mean of its divisors is an integer number (89584050).

Almost surely, 2^2121333432 is an apocalyptic number.

It is an amenable number.

2121333432 is an abundant number, since it is smaller than the sum of its proper divisors (3612045768).

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

2121333432 is a wasteful number, since it uses less digits than its factorization.

2121333432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125796 (or 125792 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The square root of 2121333432 is about 46057.9356028904. The cubic root of 2121333432 is about 1284.9009360059.

Adding to 2121333432 its reverse (2343331212), we get a palindrome (4464664644).

It can be divided in two parts, 21213 and 33432, that added together give a palindrome (54645).

The spelling of 2121333432 in words is "two billion, one hundred twenty-one million, three hundred thirty-three thousand, four hundred thirty-two".