13200121 has 8 divisors (see below), whose sum is σ = 14428800. Its totient is φ = 11976240.

The previous prime is 13200119. The next prime is 13200169. The reversal of 13200121 is 12100231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13200121 - 2¹ = 13200119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13200098 and 13200107.

It is not an unprimeable number, because it can be changed into a prime (13200101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7075 + ... + 8743.

It is an arithmetic number, because the mean of its divisors is an integer number (1803600).

Almost surely, 2^13200121 is an apocalyptic number.

13200121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13200121 is a deficient number, since it is larger than the sum of its proper divisors (1228679).

13200121 is a wasteful number, since it uses less digits than its factorization.

13200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 13200121 is about 3633.1970769558. The cubic root of 13200121 is about 236.3338722204. Note that the first 3 decimals are identical.

Adding to 13200121 its reverse (12100231), we get a palindrome (25300352).

The spelling of 13200121 in words is "thirteen million, two hundred thousand, one hundred twenty-one".