1122221222201 has 2 divisors, whose sum is σ = 1122221222202. Its totient is φ = 1122221222200.

The previous prime is 1122221222191. The next prime is 1122221222203. The reversal of 1122221222201 is 1022221222211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995453180176 + 126768042025 = 997724^2 + 356045^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122221222201 - 2³⁸ = 847343315257 is a prime.

Together with 1122221222203, 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 (1122221222203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561110611100 + 561110611101.

It is an arithmetic number, because the mean of its divisors is an integer number (561110611101).

Almost surely, 2^{1122221222201} is an apocalyptic number.

It is an amenable number.

1122221222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122221222201 is an equidigital number, since it uses as much as digits as its factorization.

1122221222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1122221222201 its reverse (1022221222211), we get a palindrome (2144442444412).

The spelling of 1122221222201 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred one".