212301202121191 has 2 divisors, whose sum is σ = 212301202121192. Its totient is φ = 212301202121190.

The previous prime is 212301202121171. The next prime is 212301202121209. The reversal of 212301202121191 is 191121202103212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212301202121191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212301202121161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106150601060595 + 106150601060596.

It is an arithmetic number, because the mean of its divisors is an integer number (106150601060596).

Almost surely, 2^{212301202121191} is an apocalyptic number.

212301202121191 is a deficient number, since it is larger than the sum of its proper divisors (1).

212301202121191 is an equidigital number, since it uses as much as digits as its factorization.

212301202121191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 212301202121191 in words is "two hundred twelve trillion, three hundred one billion, two hundred two million, one hundred twenty-one thousand, one hundred ninety-one".