2121438446 has 8 divisors (see below), whose sum is σ = 3194836344. Its totient is φ = 1056493000.

The previous prime is 2121438427. The next prime is 2121438457. The reversal of 2121438446 is 6448341212.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2112485 + ... + 2113488.

It is an arithmetic number, because the mean of its divisors is an integer number (399354543).

Almost surely, 2^2121438446 is an apocalyptic number.

2121438446 is a deficient number, since it is larger than the sum of its proper divisors (1073397898).

2121438446 is a wasteful number, since it uses less digits than its factorization.

2121438446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226226.

The product of its digits is 36864, while the sum is 35.

The square root of 2121438446 is about 46059.0756094822. The cubic root of 2121438446 is about 1284.9221381358.

Adding to 2121438446 its reverse (6448341212), we get a palindrome (8569779658).

The spelling of 2121438446 in words is "two billion, one hundred twenty-one million, four hundred thirty-eight thousand, four hundred forty-six".