4005103121 has 4 divisors (see below), whose sum is σ = 4010967792. Its totient is φ = 3999238452.

The previous prime is 4005103111. The next prime is 4005103129. The reversal of 4005103121 is 1213015004.

4005103121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4005103121 - 2¹⁴ = 4005086737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4005103121.

It is not an unprimeable number, because it can be changed into a prime (4005103129) 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, 2931311 + ... + 2932676.

It is an arithmetic number, because the mean of its divisors is an integer number (1002741948).

Almost surely, 2^4005103121 is an apocalyptic number.

It is an amenable number.

4005103121 is a deficient number, since it is larger than the sum of its proper divisors (5864671).

4005103121 is an equidigital number, since it uses as much as digits as its factorization.

4005103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864670.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 4005103121 is about 63285.8840579793. The cubic root of 4005103121 is about 1588.0758233998.

Adding to 4005103121 its reverse (1213015004), we get a palindrome (5218118125).

The spelling of 4005103121 in words is "four billion, five million, one hundred three thousand, one hundred twenty-one".