2121310244 has 6 divisors (see below), whose sum is σ = 3712292934. Its totient is φ = 1060655120.

The previous prime is 2121310211. The next prime is 2121310277. The reversal of 2121310244 is 4420131212.

It is an interprime number because it is at equal distance from previous prime (2121310211) and next prime (2121310277).

It can be written as a sum of positive squares in only one way, i.e., 1603201600 + 518108644 = 40040^2 + 22762^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265163777 + ... + 265163784.

It is an arithmetic number, because the mean of its divisors is an integer number (618715489).

Almost surely, 2^2121310244 is an apocalyptic number.

It is an amenable number.

2121310244 is a deficient number, since it is larger than the sum of its proper divisors (1590982690).

2121310244 is a wasteful number, since it uses less digits than its factorization.

2121310244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530327565 (or 530327563 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2121310244 is about 46057.6838757661. The cubic root of 2121310244 is about 1284.8962542979.

Adding to 2121310244 its reverse (4420131212), we get a palindrome (6541441456).

The spelling of 2121310244 in words is "two billion, one hundred twenty-one million, three hundred ten thousand, two hundred forty-four".