12519121 has 4 divisors (see below), whose sum is σ = 12552192. Its totient is φ = 12486052.

The previous prime is 12519113. The next prime is 12519131. The reversal of 12519121 is 12191521.

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 a cyclic number.

It is not a de Polignac number, because 12519121 - 2³ = 12519113 is a prime.

It is a super-2 number, since 2×12519121² = 313456781225282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12519092 and 12519101.

It is not an unprimeable number, because it can be changed into a prime (12519131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15961 + ... + 16726.

It is an arithmetic number, because the mean of its divisors is an integer number (3138048).

Almost surely, 2^12519121 is an apocalyptic number.

It is an amenable number.

12519121 is a deficient number, since it is larger than the sum of its proper divisors (33071).

12519121 is an equidigital number, since it uses as much as digits as its factorization.

12519121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33070.

The product of its digits is 180, while the sum is 22.

The square root of 12519121 is about 3538.2369903668. The cubic root of 12519121 is about 232.1977171534.

The spelling of 12519121 in words is "twelve million, five hundred nineteen thousand, one hundred twenty-one".