2121504024 has 16 divisors (see below), whose sum is σ = 5303760120. Its totient is φ = 707168000.

The previous prime is 2121504023. The next prime is 2121504031. The reversal of 2121504024 is 4204051212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121504023) 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 3 ways as a sum of consecutive naturals, for example, 44197977 + ... + 44198024.

Almost surely, 2^2121504024 is an apocalyptic number.

2121504024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2121504024 is an abundant number, since it is smaller than the sum of its proper divisors (3182256096).

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

2121504024 is a wasteful number, since it uses less digits than its factorization.

2121504024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88396010 (or 88396006 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2121504024 is about 46059.7874940821. The cubic root of 2121504024 is about 1284.9353778562.

Adding to 2121504024 its reverse (4204051212), we get a palindrome (6325555236).

The spelling of 2121504024 in words is "two billion, one hundred twenty-one million, five hundred four thousand, twenty-four".