12121102202191 has 2 divisors, whose sum is σ = 12121102202192. Its totient is φ = 12121102202190.

The previous prime is 12121102202161. The next prime is 12121102202243. The reversal of 12121102202191 is 19120220112121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12121102202191 - 2¹⁷ = 12121102071119 is a prime.

It is a super-2 number, since 2×12121102202191² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121102202161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060551101095 + 6060551101096.

It is an arithmetic number, because the mean of its divisors is an integer number (6060551101096).

Almost surely, 2^{12121102202191} is an apocalyptic number.

12121102202191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121102202191 is an equidigital number, since it uses as much as digits as its factorization.

12121102202191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 12121102202191 in words is "twelve trillion, one hundred twenty-one billion, one hundred two million, two hundred two thousand, one hundred ninety-one".