2121124120 has 32 divisors (see below), whose sum is σ = 4773841920. Its totient is φ = 848216320.

The previous prime is 2121124087. The next prime is 2121124139. The reversal of 2121124120 is 214211212.

It is a junction number, because it is equal to n+sod(n) for n = 2121124094 and 2121124103.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 272604 + ... + 280276.

It is an arithmetic number, because the mean of its divisors is an integer number (149182560).

Almost surely, 2^2121124120 is an apocalyptic number.

2121124120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121124120 is an abundant number, since it is smaller than the sum of its proper divisors (2652717800).

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

2121124120 is a wasteful number, since it uses less digits than its factorization.

2121124120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14595 (or 14591 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2121124120 is about 46055.6632782549. The cubic root of 2121124120 is about 1284.8586742180.

Adding to 2121124120 its reverse (214211212), we get a palindrome (2335335332).

The spelling of 2121124120 in words is "two billion, one hundred twenty-one million, one hundred twenty-four thousand, one hundred twenty".