22121100210191 has 2 divisors, whose sum is σ = 22121100210192. Its totient is φ = 22121100210190.

The previous prime is 22121100210149. The next prime is 22121100210221. The reversal of 22121100210191 is 19101200112122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121100210191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121100210691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060550105095 + 11060550105096.

It is an arithmetic number, because the mean of its divisors is an integer number (11060550105096).

Almost surely, 2^{22121100210191} is an apocalyptic number.

22121100210191 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121100210191 is an equidigital number, since it uses as much as digits as its factorization.

22121100210191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 22121100210191 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred million, two hundred ten thousand, one hundred ninety-one".