221211443027 has 2 divisors, whose sum is σ = 221211443028. Its totient is φ = 221211443026.

The previous prime is 221211442981. The next prime is 221211443041. The reversal of 221211443027 is 720344112122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221211443027 - 2²² = 221207248723 is a prime.

It is not a weakly prime, because it can be changed into another prime (221211443927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605721513 + 110605721514.

It is an arithmetic number, because the mean of its divisors is an integer number (110605721514).

Almost surely, 2^221211443027 is an apocalyptic number.

221211443027 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211443027 is an equidigital number, since it uses as much as digits as its factorization.

221211443027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 221211443027 its reverse (720344112122), we get a palindrome (941555555149).

The spelling of 221211443027 in words is "two hundred twenty-one billion, two hundred eleven million, four hundred forty-three thousand, twenty-seven".