20010011191 has 2 divisors, whose sum is σ = 20010011192. Its totient is φ = 20010011190.

The previous prime is 20010011167. The next prime is 20010011207. The reversal of 20010011191 is 19111001002.

It is an a-pointer prime, because the next prime (20010011207) can be obtained adding 20010011191 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20010011191 - 2¹⁵ = 20009978423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010011111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005005595 + 10005005596.

It is an arithmetic number, because the mean of its divisors is an integer number (10005005596).

Almost surely, 2^20010011191 is an apocalyptic number.

20010011191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010011191 is an equidigital number, since it uses as much as digits as its factorization.

20010011191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 20010011191 its reverse (19111001002), we get a palindrome (39121012193).

The spelling of 20010011191 in words is "twenty billion, ten million, eleven thousand, one hundred ninety-one".