2120212121191 has 2 divisors, whose sum is σ = 2120212121192. Its totient is φ = 2120212121190.

The previous prime is 2120212121081. The next prime is 2120212121227. The reversal of 2120212121191 is 1911212120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120212121191 - 2⁹ = 2120212120679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120212121591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060106060595 + 1060106060596.

It is an arithmetic number, because the mean of its divisors is an integer number (1060106060596).

Almost surely, 2^{2120212121191} is an apocalyptic number.

2120212121191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120212121191 is an equidigital number, since it uses as much as digits as its factorization.

2120212121191 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 2120212121191 in words is "two trillion, one hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ninety-one".