2121324412 has 12 divisors (see below), whose sum is σ = 3749074056. Its totient is φ = 1050160400.

The previous prime is 2121324397. The next prime is 2121324421. The reversal of 2121324412 is 2144231212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2624998 + ... + 2625805.

It is an arithmetic number, because the mean of its divisors is an integer number (312422838).

Almost surely, 2^2121324412 is an apocalyptic number.

It is an amenable number.

2121324412 is a deficient number, since it is larger than the sum of its proper divisors (1627749644).

2121324412 is a wasteful number, since it uses less digits than its factorization.

2121324412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250908 (or 5250906 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 2121324412 is about 46057.8376826355. The cubic root of 2121324412 is about 1284.8991148522.

Adding to 2121324412 its reverse (2144231212), we get a palindrome (4265555624).

The spelling of 2121324412 in words is "two billion, one hundred twenty-one million, three hundred twenty-four thousand, four hundred twelve".