12219275447 has 2 divisors, whose sum is σ = 12219275448. Its totient is φ = 12219275446.

The previous prime is 12219275437. The next prime is 12219275473. The reversal of 12219275447 is 74457291221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12219275447 - 2²⁰ = 12218226871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12219275398 and 12219275407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12219275407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6109637723 + 6109637724.

It is an arithmetic number, because the mean of its divisors is an integer number (6109637724).

Almost surely, 2^12219275447 is an apocalyptic number.

12219275447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12219275447 is an equidigital number, since it uses as much as digits as its factorization.

12219275447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The spelling of 12219275447 in words is "twelve billion, two hundred nineteen million, two hundred seventy-five thousand, four hundred forty-seven".