2121024140 has 24 divisors (see below), whose sum is σ = 4476768912. Its totient is φ = 844101440.

The previous prime is 2121024053. The next prime is 2121024173. The reversal of 2121024140 is 414201212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265226 + ... + 273105.

It is an arithmetic number, because the mean of its divisors is an integer number (186532038).

Almost surely, 2^2121024140 is an apocalyptic number.

2121024140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121024140 is an abundant number, since it is smaller than the sum of its proper divisors (2355744772).

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

2121024140 is a wasteful number, since it uses less digits than its factorization.

2121024140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538537 (or 538535 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2121024140 is about 46054.5778397761. The cubic root of 2121024140 is about 1284.8384864652.

Adding to 2121024140 its reverse (414201212), we get a palindrome (2535225352).

The spelling of 2121024140 in words is "two billion, one hundred twenty-one million, twenty-four thousand, one hundred forty".