12099244418 has 4 divisors (see below), whose sum is σ = 18148866630. Its totient is φ = 6049622208.

The previous prime is 12099244393. The next prime is 12099244439. The reversal of 12099244418 is 81444299021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81444299021 = 431 ⋅188965891.

It can be written as a sum of positive squares in only one way, i.e., 11200623889 + 898620529 = 105833^2 + 29977^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3024811103 + ... + 3024811106.

Almost surely, 2^12099244418 is an apocalyptic number.

12099244418 is a deficient number, since it is larger than the sum of its proper divisors (6049622212).

12099244418 is an equidigital number, since it uses as much as digits as its factorization.

12099244418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049622211.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 12099244418 in words is "twelve billion, ninety-nine million, two hundred forty-four thousand, four hundred eighteen".