12021201099 has 12 divisors (see below), whose sum is σ = 17833253776. Its totient is φ = 7797535632.

The previous prime is 12021201097. The next prime is 12021201151. The reversal of 12021201099 is 99010212021.

12021201099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12021201099 - 2¹ = 12021201097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021201097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18049519 + ... + 18050184.

Almost surely, 2^12021201099 is an apocalyptic number.

12021201099 is a deficient number, since it is larger than the sum of its proper divisors (5812052677).

12021201099 is a wasteful number, since it uses less digits than its factorization.

12021201099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36099746 (or 36099743 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 12021201099 in words is "twelve billion, twenty-one million, two hundred one thousand, ninety-nine".