1100201221201 has 2 divisors, whose sum is σ = 1100201221202. Its totient is φ = 1100201221200.

The previous prime is 1100201221199. The next prime is 1100201221211. The reversal of 1100201221201 is 1021221020011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1094398438225 + 5802782976 = 1046135^2 + 76176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100201221201 - 2¹ = 1100201221199 is a prime.

Together with 1100201221199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1100201221211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550100610600 + 550100610601.

It is an arithmetic number, because the mean of its divisors is an integer number (550100610601).

Almost surely, 2^{1100201221201} is an apocalyptic number.

It is an amenable number.

1100201221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100201221201 is an equidigital number, since it uses as much as digits as its factorization.

1100201221201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1100201221201 its reverse (1021221020011), we get a palindrome (2121422241212).

The spelling of 1100201221201 in words is "one trillion, one hundred billion, two hundred one million, two hundred twenty-one thousand, two hundred one".