12210219949 has 2 divisors, whose sum is σ = 12210219950. Its totient is φ = 12210219948.

The previous prime is 12210219947. The next prime is 12210219997. The reversal of 12210219949 is 94991201221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12153519049 + 56700900 = 110243^2 + 7530^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210219949 - 2¹ = 12210219947 is a prime.

Together with 12210219947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12210219947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105109974 + 6105109975.

It is an arithmetic number, because the mean of its divisors is an integer number (6105109975).

Almost surely, 2^12210219949 is an apocalyptic number.

It is an amenable number.

12210219949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210219949 is an equidigital number, since it uses as much as digits as its factorization.

12210219949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 12210219949 in words is "twelve billion, two hundred ten million, two hundred nineteen thousand, nine hundred forty-nine".