2121180936 has 64 divisors (see below), whose sum is σ = 6065280000. Its totient is φ = 605575488.

The previous prime is 2121180931. The next prime is 2121180949. The reversal of 2121180936 is 6390811212.

It is a junction number, because it is equal to n+sod(n) for n = 2121180897 and 2121180906.

It is not an unprimeable number, because it can be changed into a prime (2121180931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247621 + ... + 256043.

It is an arithmetic number, because the mean of its divisors is an integer number (94770000).

Almost surely, 2^2121180936 is an apocalyptic number.

It is an amenable number.

2121180936 is an abundant number, since it is smaller than the sum of its proper divisors (3944099064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121180936 is a wasteful number, since it uses less digits than its factorization.

2121180936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9938 (or 9934 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 2121180936 is about 46056.2800929472. The cubic root of 2121180936 is about 1284.8701461035.

The spelling of 2121180936 in words is "two billion, one hundred twenty-one million, one hundred eighty thousand, nine hundred thirty-six".