11212222121227 has 2 divisors, whose sum is σ = 11212222121228. Its totient is φ = 11212222121226.

The previous prime is 11212222121213. The next prime is 11212222121299. The reversal of 11212222121227 is 72212122221211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11212222121227 - 2⁷ = 11212222121099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212222121195 and 11212222121204.

It is not a weakly prime, because it can be changed into another prime (11212222121207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606111060613 + 5606111060614.

It is an arithmetic number, because the mean of its divisors is an integer number (5606111060614).

Almost surely, 2^{11212222121227} is an apocalyptic number.

11212222121227 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212222121227 is an equidigital number, since it uses as much as digits as its factorization.

11212222121227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 28.

Adding to 11212222121227 its reverse (72212122221211), we get a palindrome (83424344342438).

The spelling of 11212222121227 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-seven".