12219523 has 2 divisors, whose sum is σ = 12219524. Its totient is φ = 12219522.

The previous prime is 12219511. The next prime is 12219533. The reversal of 12219523 is 32591221.

It is a happy number.

12219523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12219523 is a prime.

It is not a weakly prime, because it can be changed into another prime (12219503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6109761 + 6109762.

It is an arithmetic number, because the mean of its divisors is an integer number (6109762).

Almost surely, 2^12219523 is an apocalyptic number.

12219523 is the 1869-th centered heptagonal number.

12219523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12219523 is an equidigital number, since it uses as much as digits as its factorization.

12219523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 12219523 is about 3495.6434314730. The cubic root of 12219523 is about 230.3304826902.

The spelling of 12219523 in words is "twelve million, two hundred nineteen thousand, five hundred twenty-three".