13150121 has 4 divisors (see below), whose sum is σ = 13172052. Its totient is φ = 13128192.

The previous prime is 13150117. The next prime is 13150139. The reversal of 13150121 is 12105131.

13150121 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1590121 + 11560000 = 1261^2 + 3400^2 .

It is a cyclic number.

It is not a de Polignac number, because 13150121 - 2² = 13150117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13150096 and 13150105.

It is not an unprimeable number, because it can be changed into a prime (13150171) 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, 10040 + ... + 11273.

It is an arithmetic number, because the mean of its divisors is an integer number (3293013).

Almost surely, 2^13150121 is an apocalyptic number.

It is an amenable number.

13150121 is a deficient number, since it is larger than the sum of its proper divisors (21931).

13150121 is an equidigital number, since it uses as much as digits as its factorization.

13150121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21930.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 13150121 is about 3626.3095565602. The cubic root of 13150121 is about 236.0350960445.

Adding to 13150121 its reverse (12105131), we get a palindrome (25255252).

The spelling of 13150121 in words is "thirteen million, one hundred fifty thousand, one hundred twenty-one".