22112221221197 has 2 divisors, whose sum is σ = 22112221221198. Its totient is φ = 22112221221196.

The previous prime is 22112221221179. The next prime is 22112221221253. The reversal of 22112221221197 is 79112212221122.

Together with previous prime (22112221221179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20934184501321 + 1178036719876 = 4575389^2 + 1085374^2 .

It is a cyclic number.

It is not a de Polignac number, because 22112221221197 - 2³² = 22107926253901 is a prime.

It is a super-3 number, since 3×22112221221197³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22112221221397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056110610598 + 11056110610599.

It is an arithmetic number, because the mean of its divisors is an integer number (11056110610599).

Almost surely, 2^{22112221221197} is an apocalyptic number.

It is an amenable number.

22112221221197 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112221221197 is an equidigital number, since it uses as much as digits as its factorization.

22112221221197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 35.

The spelling of 22112221221197 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred ninety-seven".