12206905819 has 2 divisors, whose sum is σ = 12206905820. Its totient is φ = 12206905818.

The previous prime is 12206905817. The next prime is 12206905829. The reversal of 12206905819 is 91850960221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12206905819 - 2¹ = 12206905817 is a prime.

It is a super-2 number, since 2×12206905819² (a number of 21 digits) contains 22 as substring.

Together with 12206905817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12206905817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6103452909 + 6103452910.

It is an arithmetic number, because the mean of its divisors is an integer number (6103452910).

Almost surely, 2^12206905819 is an apocalyptic number.

12206905819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12206905819 is an equidigital number, since it uses as much as digits as its factorization.

12206905819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 12206905819 in words is "twelve billion, two hundred six million, nine hundred five thousand, eight hundred nineteen".