2120024121 has 4 divisors (see below), whose sum is σ = 2826698832. Its totient is φ = 1413349412.

The previous prime is 2120024119. The next prime is 2120024131. The reversal of 2120024121 is 1214200212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120024121 - 2¹ = 2120024119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120024121.

It is not an unprimeable number, because it can be changed into a prime (2120024131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353337351 + ... + 353337356.

It is an arithmetic number, because the mean of its divisors is an integer number (706674708).

Almost surely, 2^2120024121 is an apocalyptic number.

It is an amenable number.

2120024121 is a deficient number, since it is larger than the sum of its proper divisors (706674711).

2120024121 is an equidigital number, since it uses as much as digits as its factorization.

2120024121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706674710.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2120024121 is about 46043.7196694620. The cubic root of 2120024121 is about 1284.6365298009.

Adding to 2120024121 its reverse (1214200212), we get a palindrome (3334224333).

The spelling of 2120024121 in words is "two billion, one hundred twenty million, twenty-four thousand, one hundred twenty-one".