12210219947 has 2 divisors, whose sum is σ = 12210219948. Its totient is φ = 12210219946.

The previous prime is 12210219937. The next prime is 12210219949. The reversal of 12210219947 is 74991201221.

It is a strong prime.

It is an emirp because it is prime and its reverse (74991201221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12210219947 - 2⁶ = 12210219883 is a prime.

Together with 12210219949, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12210219947.

It is not a weakly prime, because it can be changed into another prime (12210219949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105109973 + 6105109974.

It is an arithmetic number, because the mean of its divisors is an integer number (6105109974).

Almost surely, 2^12210219947 is an apocalyptic number.

12210219947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210219947 is an equidigital number, since it uses as much as digits as its factorization.

12210219947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 12210219947 in words is "twelve billion, two hundred ten million, two hundred nineteen thousand, nine hundred forty-seven".