12020202191 has 2 divisors, whose sum is σ = 12020202192. Its totient is φ = 12020202190.

The previous prime is 12020202169. The next prime is 12020202193. The reversal of 12020202191 is 19120202021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12020202191 - 2⁶ = 12020202127 is a prime.

Together with 12020202193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12020202193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010101095 + 6010101096.

It is an arithmetic number, because the mean of its divisors is an integer number (6010101096).

Almost surely, 2^12020202191 is an apocalyptic number.

12020202191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020202191 is an equidigital number, since it uses as much as digits as its factorization.

12020202191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12020202191 in words is "twelve billion, twenty million, two hundred two thousand, one hundred ninety-one".