12209719797 has 12 divisors (see below), whose sum is σ = 19239558624. Its totient is φ = 7399830120.

The previous prime is 12209719759. The next prime is 12209719813. The reversal of 12209719797 is 79791790221.

It is not a de Polignac number, because 12209719797 - 2⁶ = 12209719733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12209719097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61665153 + ... + 61665350.

It is an arithmetic number, because the mean of its divisors is an integer number (1603296552).

Almost surely, 2^12209719797 is an apocalyptic number.

It is an amenable number.

12209719797 is a deficient number, since it is larger than the sum of its proper divisors (7029838827).

12209719797 is a wasteful number, since it uses less digits than its factorization.

12209719797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123330520 (or 123330517 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 54.

The spelling of 12209719797 in words is "twelve billion, two hundred nine million, seven hundred nineteen thousand, seven hundred ninety-seven".