22110122109991 has 2 divisors, whose sum is σ = 22110122109992. Its totient is φ = 22110122109990.

The previous prime is 22110122109983. The next prime is 22110122110031. The reversal of 22110122109991 is 19990122101122.

It is an a-pointer prime, because the next prime (22110122110031) can be obtained adding 22110122109991 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22110122109991 - 2³ = 22110122109983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22110122103991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055061054995 + 11055061054996.

It is an arithmetic number, because the mean of its divisors is an integer number (11055061054996).

Almost surely, 2^{22110122109991} is an apocalyptic number.

22110122109991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22110122109991 is an equidigital number, since it uses as much as digits as its factorization.

22110122109991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 22110122109991 in words is "twenty-two trillion, one hundred ten billion, one hundred twenty-two million, one hundred nine thousand, nine hundred ninety-one".