12042321100991 has 2 divisors, whose sum is σ = 12042321100992. Its totient is φ = 12042321100990.

The previous prime is 12042321100951. The next prime is 12042321101021. The reversal of 12042321100991 is 19900112324021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12042321100991 - 2²² = 12042316906687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12042321100951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6021160550495 + 6021160550496.

It is an arithmetic number, because the mean of its divisors is an integer number (6021160550496).

Almost surely, 2^{12042321100991} is an apocalyptic number.

12042321100991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12042321100991 is an equidigital number, since it uses as much as digits as its factorization.

12042321100991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 12042321100991 in words is "twelve trillion, forty-two billion, three hundred twenty-one million, one hundred thousand, nine hundred ninety-one".