18060121 has 4 divisors (see below), whose sum is σ = 18400932. Its totient is φ = 17719312.

The previous prime is 18060109. The next prime is 18060143. The reversal of 18060121 is 12106081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12106081 = 13 ⋅931237.

It can be written as a sum of positive squares in 2 ways, for example, as 8042896 + 10017225 = 2836^2 + 3165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18060121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18060191) 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, 170326 + ... + 170431.

It is an arithmetic number, because the mean of its divisors is an integer number (4600233).

Almost surely, 2^18060121 is an apocalyptic number.

It is an amenable number.

18060121 is a deficient number, since it is larger than the sum of its proper divisors (340811).

18060121 is an equidigital number, since it uses as much as digits as its factorization.

18060121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340810.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 18060121 is about 4249.7201084307. The cubic root of 18060121 is about 262.3655958962.

It can be divided in two parts, 18060 and 121, that added together give a palindrome (18181).

The spelling of 18060121 in words is "eighteen million, sixty thousand, one hundred twenty-one".