12998320226 has 4 divisors (see below), whose sum is σ = 19497480342. Its totient is φ = 6499160112.

The previous prime is 12998320189. The next prime is 12998320253. The reversal of 12998320226 is 62202389921.

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

It can be written as a sum of positive squares in only one way, i.e., 12353211025 + 645109201 = 111145^2 + 25399^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249580055 + ... + 3249580058.

Almost surely, 2^12998320226 is an apocalyptic number.

12998320226 is a deficient number, since it is larger than the sum of its proper divisors (6499160116).

12998320226 is an equidigital number, since it uses as much as digits as its factorization.

12998320226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6499160115.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 12998320226 in words is "twelve billion, nine hundred ninety-eight million, three hundred twenty thousand, two hundred twenty-six".