12001221002099 has 16 divisors (see below), whose sum is σ = 13732872772608. Its totient is φ = 10273868247552.

The previous prime is 12001221002093. The next prime is 12001221002117. The reversal of 12001221002099 is 99020012210021.

It is not a de Polignac number, because 12001221002099 - 2²⁸ = 12000952566643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001221002093) 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, 236437907 + ... + 236488659.

It is an arithmetic number, because the mean of its divisors is an integer number (858304548288).

Almost surely, 2^{12001221002099} is an apocalyptic number.

12001221002099 is a deficient number, since it is larger than the sum of its proper divisors (1731651770509).

12001221002099 is an equidigital number, since it uses as much as digits as its factorization.

12001221002099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92434.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 12001221002099 in words is "twelve trillion, one billion, two hundred twenty-one million, two thousand, ninety-nine".