12219513 has 4 divisors (see below), whose sum is σ = 16292688. Its totient is φ = 8146340.

The previous prime is 12219511. The next prime is 12219523. The reversal of 12219513 is 31591221.

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 12219513 - 2¹ = 12219511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12219511) 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, 2036583 + ... + 2036588.

It is an arithmetic number, because the mean of its divisors is an integer number (4073172).

Almost surely, 2^12219513 is an apocalyptic number.

It is an amenable number.

12219513 is a deficient number, since it is larger than the sum of its proper divisors (4073175).

12219513 is an equidigital number, since it uses as much as digits as its factorization.

12219513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073174.

The product of its digits is 540, while the sum is 24.

The square root of 12219513 is about 3495.6420011208. The cubic root of 12219513 is about 230.3304198589.

The spelling of 12219513 in words is "twelve million, two hundred nineteen thousand, five hundred thirteen".