2122012100191 has 2 divisors, whose sum is σ = 2122012100192. Its totient is φ = 2122012100190.

The previous prime is 2122012100177. The next prime is 2122012100207. The reversal of 2122012100191 is 1910012102212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122012100191 - 2⁹ = 2122012099679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122012100141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061006050095 + 1061006050096.

It is an arithmetic number, because the mean of its divisors is an integer number (1061006050096).

Almost surely, 2^{2122012100191} is an apocalyptic number.

2122012100191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122012100191 is an equidigital number, since it uses as much as digits as its factorization.

2122012100191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 2122012100191 in words is "two trillion, one hundred twenty-two billion, twelve million, one hundred thousand, one hundred ninety-one".