12012211200091 has 4 divisors (see below), whose sum is σ = 12013254028800. Its totient is φ = 12011168371384.

The previous prime is 12012211200013. The next prime is 12012211200107. The reversal of 12012211200091 is 19000211221021.

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

It is a cyclic number.

It is not a de Polignac number, because 12012211200091 - 2⁹ = 12012211199579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012211200191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521397076 + ... + 521420113.

It is an arithmetic number, because the mean of its divisors is an integer number (3003313507200).

Almost surely, 2^{12012211200091} is an apocalyptic number.

12012211200091 is a deficient number, since it is larger than the sum of its proper divisors (1042828709).

12012211200091 is a wasteful number, since it uses less digits than its factorization.

12012211200091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042828708.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 12012211200091 in words is "twelve trillion, twelve billion, two hundred eleven million, two hundred thousand, ninety-one".