12101120121091 has 2 divisors, whose sum is σ = 12101120121092. Its totient is φ = 12101120121090.

The previous prime is 12101120121067. The next prime is 12101120121107. The reversal of 12101120121091 is 19012102110121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19012102110121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12101120121091 - 2¹⁷ = 12101119990019 is a prime.

It is not a weakly prime, because it can be changed into another prime (12101120721091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050560060545 + 6050560060546.

It is an arithmetic number, because the mean of its divisors is an integer number (6050560060546).

Almost surely, 2^{12101120121091} is an apocalyptic number.

12101120121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101120121091 is an equidigital number, since it uses as much as digits as its factorization.

12101120121091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 12101120121091 in words is "twelve trillion, one hundred one billion, one hundred twenty million, one hundred twenty-one thousand, ninety-one".