2121030616 has 8 divisors (see below), whose sum is σ = 3976932420. Its totient is φ = 1060515304.

The previous prime is 2121030601. The next prime is 2121030643. The reversal of 2121030616 is 6160301212.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 132564406 + ... + 132564421.

Almost surely, 2^2121030616 is an apocalyptic number.

It is an amenable number.

2121030616 is a deficient number, since it is larger than the sum of its proper divisors (1855901804).

2121030616 is a wasteful number, since it uses less digits than its factorization.

2121030616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265128833 (or 265128829 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2121030616 is about 46054.6481476083. The cubic root of 2121030616 is about 1284.8397941048.

Adding to 2121030616 its reverse (6160301212), we get a palindrome (8281331828).

The spelling of 2121030616 in words is "two billion, one hundred twenty-one million, thirty thousand, six hundred sixteen".