20122201200191 has 2 divisors, whose sum is σ = 20122201200192. Its totient is φ = 20122201200190.

The previous prime is 20122201200169. The next prime is 20122201200223. The reversal of 20122201200191 is 19100210222102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20122201200191 - 2²² = 20122197005887 is a prime.

It is a super-2 number, since 2×20122201200191² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122201200791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061100600095 + 10061100600096.

It is an arithmetic number, because the mean of its divisors is an integer number (10061100600096).

Almost surely, 2^{20122201200191} is an apocalyptic number.

20122201200191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122201200191 is an equidigital number, since it uses as much as digits as its factorization.

20122201200191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 20122201200191 its reverse (19100210222102), we get a palindrome (39222411422293).

The spelling of 20122201200191 in words is "twenty trillion, one hundred twenty-two billion, two hundred one million, two hundred thousand, one hundred ninety-one".