12078222326 has 4 divisors (see below), whose sum is σ = 18117333492. Its totient is φ = 6039111162.

The previous prime is 12078222287. The next prime is 12078222329. The reversal of 12078222326 is 62322287021.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078222329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3019555580 + ... + 3019555583.

It is an arithmetic number, because the mean of its divisors is an integer number (4529333373).

Almost surely, 2^12078222326 is an apocalyptic number.

12078222326 is a deficient number, since it is larger than the sum of its proper divisors (6039111166).

12078222326 is an equidigital number, since it uses as much as digits as its factorization.

12078222326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6039111165.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 12078222326 in words is "twelve billion, seventy-eight million, two hundred twenty-two thousand, three hundred twenty-six".