2121443464 has 32 divisors (see below), whose sum is σ = 4813361280. Its totient is φ = 855707904.

The previous prime is 2121443417. The next prime is 2121443473. The reversal of 2121443464 is 4643441212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113252 + ... + 1115155.

It is an arithmetic number, because the mean of its divisors is an integer number (150417540).

Almost surely, 2^2121443464 is an apocalyptic number.

It is an amenable number.

2121443464 is an abundant number, since it is smaller than the sum of its proper divisors (2691917816).

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

2121443464 is a wasteful number, since it uses less digits than its factorization.

2121443464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228437 (or 2228433 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 2121443464 is about 46059.1300829705. The cubic root of 2121443464 is about 1284.9231512430.

Adding to 2121443464 its reverse (4643441212), we get a palindrome (6764884676).

The spelling of 2121443464 in words is "two billion, one hundred twenty-one million, four hundred forty-three thousand, four hundred sixty-four".