11111221202227 has 2 divisors, whose sum is σ = 11111221202228. Its totient is φ = 11111221202226.

The previous prime is 11111221202209. The next prime is 11111221202359. The reversal of 11111221202227 is 72220212211111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111221202227 - 2¹¹ = 11111221200179 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111221272227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555610601113 + 5555610601114.

It is an arithmetic number, because the mean of its divisors is an integer number (5555610601114).

Almost surely, 2^{11111221202227} is an apocalyptic number.

11111221202227 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111221202227 is an equidigital number, since it uses as much as digits as its factorization.

11111221202227 is an evil number, because the sum of its binary digits is even.

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

Adding to 11111221202227 its reverse (72220212211111), we get a palindrome (83331433413338).

The spelling of 11111221202227 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty-seven".