2121044215 has 8 divisors (see below), whose sum is σ = 2546162928. Its totient is φ = 1696228800.

The previous prime is 2121044213. The next prime is 2121044221. The reversal of 2121044215 is 5124401212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121044215 - 2¹ = 2121044213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121044213) 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 7 ways as a sum of consecutive naturals, for example, 60142 + ... + 88651.

It is an arithmetic number, because the mean of its divisors is an integer number (318270366).

Almost surely, 2^2121044215 is an apocalyptic number.

2121044215 is a deficient number, since it is larger than the sum of its proper divisors (425118713).

2121044215 is a wasteful number, since it uses less digits than its factorization.

2121044215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151649.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2121044215 is about 46054.7957871925. The cubic root of 2121044215 is about 1284.8425400181.

Adding to 2121044215 its reverse (5124401212), we get a palindrome (7245445427).

The spelling of 2121044215 in words is "two billion, one hundred twenty-one million, forty-four thousand, two hundred fifteen".