12103020191 has 2 divisors, whose sum is σ = 12103020192. Its totient is φ = 12103020190.

The previous prime is 12103020169. The next prime is 12103020221. The reversal of 12103020191 is 19102030121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12103020191 - 2¹⁰ = 12103019167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12103020131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051510095 + 6051510096.

It is an arithmetic number, because the mean of its divisors is an integer number (6051510096).

Almost surely, 2^12103020191 is an apocalyptic number.

12103020191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103020191 is an equidigital number, since it uses as much as digits as its factorization.

12103020191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 12103020191 in words is "twelve billion, one hundred three million, twenty thousand, one hundred ninety-one".