10120013121 has 4 divisors (see below), whose sum is σ = 13493350832. Its totient is φ = 6746675412.

The previous prime is 10120013117. The next prime is 10120013171. The reversal of 10120013121 is 12131002101.

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 not a de Polignac number, because 10120013121 - 2² = 10120013117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10120013097 and 10120013106.

It is not an unprimeable number, because it can be changed into a prime (10120013171) 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, 1686668851 + ... + 1686668856.

It is an arithmetic number, because the mean of its divisors is an integer number (3373337708).

Almost surely, 2^10120013121 is an apocalyptic number.

It is an amenable number.

10120013121 is a deficient number, since it is larger than the sum of its proper divisors (3373337711).

10120013121 is an equidigital number, since it uses as much as digits as its factorization.

10120013121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373337710.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 10120013121 its reverse (12131002101), we get a palindrome (22251015222).

The spelling of 10120013121 in words is "ten billion, one hundred twenty million, thirteen thousand, one hundred twenty-one".