11211221201227 has 2 divisors, whose sum is σ = 11211221201228. Its totient is φ = 11211221201226.

The previous prime is 11211221201189. The next prime is 11211221201239. The reversal of 11211221201227 is 72210212211211.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72210212211211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11211221201227 - 2⁴³ = 2415128179019 is a prime.

It is not a weakly prime, because it can be changed into another prime (11211221201287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605610600613 + 5605610600614.

It is an arithmetic number, because the mean of its divisors is an integer number (5605610600614).

Almost surely, 2^{11211221201227} is an apocalyptic number.

11211221201227 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211221201227 is an equidigital number, since it uses as much as digits as its factorization.

11211221201227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 11211221201227 its reverse (72210212211211), we get a palindrome (83421433412438).

The spelling of 11211221201227 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-seven".