1201122212201 has 2 divisors, whose sum is σ = 1201122212202. Its totient is φ = 1201122212200.

The previous prime is 1201122212161. The next prime is 1201122212239. The reversal of 1201122212201 is 1022122211021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1161232536025 + 39889676176 = 1077605^2 + 199724^2 .

It is an emirp because it is prime and its reverse (1022122211021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201122212201 - 2⁶ = 1201122212137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201122212201.

It is not a weakly prime, because it can be changed into another prime (1201122212291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600561106100 + 600561106101.

It is an arithmetic number, because the mean of its divisors is an integer number (600561106101).

Almost surely, 2^{1201122212201} is an apocalyptic number.

It is an amenable number.

1201122212201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201122212201 is an equidigital number, since it uses as much as digits as its factorization.

1201122212201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1201122212201 its reverse (1022122211021), we get a palindrome (2223244423222).

The spelling of 1201122212201 in words is "one trillion, two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred one".