9100001222201 has 2 divisors, whose sum is σ = 9100001222202. Its totient is φ = 9100001222200.

The previous prime is 9100001222183. The next prime is 9100001222203. The reversal of 9100001222201 is 1022221000019.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7139584000000 + 1960417222201 = 2672000^2 + 1400149^2 .

It is an emirp because it is prime and its reverse (1022221000019) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9100001222201 is a prime.

Together with 9100001222203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9100001222203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4550000611100 + 4550000611101.

It is an arithmetic number, because the mean of its divisors is an integer number (4550000611101).

Almost surely, 2^{9100001222201} is an apocalyptic number.

It is an amenable number.

9100001222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

9100001222201 is an equidigital number, since it uses as much as digits as its factorization.

9100001222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 9100001222201 in words is "nine trillion, one hundred billion, one million, two hundred twenty-two thousand, two hundred one".