2123212444 has 12 divisors (see below), whose sum is σ = 3835480768. Its totient is φ = 1027360800.

The previous prime is 2123212423. The next prime is 2123212463. The reversal of 2123212444 is 4442123212.

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, 8561217 + ... + 8561464.

Almost surely, 2^2123212444 is an apocalyptic number.

It is an amenable number.

2123212444 is a deficient number, since it is larger than the sum of its proper divisors (1712268324).

2123212444 is a wasteful number, since it uses less digits than its factorization.

2123212444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17122716 (or 17122714 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 2123212444 is about 46078.3294402043. The cubic root of 2123212444 is about 1285.2801993097.

Adding to 2123212444 its reverse (4442123212), we get a palindrome (6565335656).

The spelling of 2123212444 in words is "two billion, one hundred twenty-three million, two hundred twelve thousand, four hundred forty-four".