12021100099 has 16 divisors (see below), whose sum is σ = 12342468096. Its totient is φ = 11704492800.

The previous prime is 12021100067. The next prime is 12021100109. The reversal of 12021100099 is 99000112021.

It is a cyclic number.

It is not a de Polignac number, because 12021100099 - 2⁵ = 12021100067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021109099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3765594 + ... + 3768784.

It is an arithmetic number, because the mean of its divisors is an integer number (771404256).

Almost surely, 2^12021100099 is an apocalyptic number.

12021100099 is a deficient number, since it is larger than the sum of its proper divisors (321367997).

12021100099 is an equidigital number, since it uses as much as digits as its factorization.

12021100099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 12021100099 in words is "twelve billion, twenty-one million, one hundred thousand, ninety-nine".