10121210000191 has 2 divisors, whose sum is σ = 10121210000192. Its totient is φ = 10121210000190.

The previous prime is 10121210000183. The next prime is 10121210000243. The reversal of 10121210000191 is 19100001212101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121210000191 - 2³ = 10121210000183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121210007191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060605000095 + 5060605000096.

It is an arithmetic number, because the mean of its divisors is an integer number (5060605000096).

Almost surely, 2^{10121210000191} is an apocalyptic number.

10121210000191 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121210000191 is an equidigital number, since it uses as much as digits as its factorization.

10121210000191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 10121210000191 its reverse (19100001212101), we get a palindrome (29221211212292).

The spelling of 10121210000191 in words is "ten trillion, one hundred twenty-one billion, two hundred ten million, one hundred ninety-one", and thus it is an aban number.