2211020120191 has 2 divisors, whose sum is σ = 2211020120192. Its totient is φ = 2211020120190.

The previous prime is 2211020120143. The next prime is 2211020120213. The reversal of 2211020120191 is 1910210201122.

It is an a-pointer prime, because the next prime (2211020120213) can be obtained adding 2211020120191 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2211020120191 - 2¹¹ = 2211020118143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211020120791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105510060095 + 1105510060096.

It is an arithmetic number, because the mean of its divisors is an integer number (1105510060096).

Almost surely, 2^{2211020120191} is an apocalyptic number.

2211020120191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211020120191 is an equidigital number, since it uses as much as digits as its factorization.

2211020120191 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 2211020120191 in words is "two trillion, two hundred eleven billion, twenty million, one hundred twenty thousand, one hundred ninety-one".