2121448316 has 24 divisors (see below), whose sum is σ = 3999423120. Its totient is φ = 978809472.

The previous prime is 2121448313. The next prime is 2121448319. The reversal of 2121448316 is 6138441212.

It is an interprime number because it is at equal distance from previous prime (2121448313) and next prime (2121448319).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121448313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241595 + ... + 250221.

It is an arithmetic number, because the mean of its divisors is an integer number (166642630).

Almost surely, 2^2121448316 is an apocalyptic number.

2121448316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2121448316 is a deficient number, since it is larger than the sum of its proper divisors (1877974804).

2121448316 is a wasteful number, since it uses less digits than its factorization.

2121448316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13373 (or 13371 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 2121448316 is about 46059.1827543651. The cubic root of 2121448316 is about 1284.9241308343.

Adding to 2121448316 its reverse (6138441212), we get a palindrome (8259889528).

The spelling of 2121448316 in words is "two billion, one hundred twenty-one million, four hundred forty-eight thousand, three hundred sixteen".