13512121 has 8 divisors (see below), whose sum is σ = 15704640. Its totient is φ = 11385168.

The previous prime is 13512113. The next prime is 13512131. The reversal of 13512121 is 12121531.

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 13512121 - 2³ = 13512113 is a prime.

13512121 is a modest number, since divided by 2121 gives 1351 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 13512095 and 13512104.

It is not an unprimeable number, because it can be changed into a prime (13512131) 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, 15946 + ... + 16771.

It is an arithmetic number, because the mean of its divisors is an integer number (1963080).

Almost surely, 2^13512121 is an apocalyptic number.

It is an amenable number.

13512121 is a deficient number, since it is larger than the sum of its proper divisors (2192519).

13512121 is an equidigital number, since it uses as much as digits as its factorization.

13512121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32783.

The product of its digits is 60, while the sum is 16.

The square root of 13512121 is about 3675.8837032746. The cubic root of 13512121 is about 238.1813990268.

Adding to 13512121 its reverse (12121531), we get a palindrome (25633652).

The spelling of 13512121 in words is "thirteen million, five hundred twelve thousand, one hundred twenty-one".