2012211120191 has 2 divisors, whose sum is σ = 2012211120192. Its totient is φ = 2012211120190.

The previous prime is 2012211120181. The next prime is 2012211120277. The reversal of 2012211120191 is 1910211122102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012211120191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012211120181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006105560095 + 1006105560096.

It is an arithmetic number, because the mean of its divisors is an integer number (1006105560096).

Almost surely, 2^{2012211120191} is an apocalyptic number.

2012211120191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012211120191 is an equidigital number, since it uses as much as digits as its factorization.

2012211120191 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 23.

Adding to 2012211120191 its reverse (1910211122102), we get a palindrome (3922422242293).

The spelling of 2012211120191 in words is "two trillion, twelve billion, two hundred eleven million, one hundred twenty thousand, one hundred ninety-one".