120121220210191 has 2 divisors, whose sum is σ = 120121220210192. Its totient is φ = 120121220210190.

The previous prime is 120121220210161. The next prime is 120121220210213. The reversal of 120121220210191 is 191012022121021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120121220210191 - 2¹⁹ = 120121219685903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120121220210111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060610105095 + 60060610105096.

It is an arithmetic number, because the mean of its divisors is an integer number (60060610105096).

Almost surely, 2^{120121220210191} is an apocalyptic number.

120121220210191 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121220210191 is an equidigital number, since it uses as much as digits as its factorization.

120121220210191 is an evil number, because the sum of its binary digits is even.

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

The spelling of 120121220210191 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, one hundred ninety-one".