1111220027 has 2 divisors, whose sum is σ = 1111220028. Its totient is φ = 1111220026.

The previous prime is 1111220021. The next prime is 1111220029. The reversal of 1111220027 is 7200221111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111220027 - 2⁸ = 1111219771 is a prime.

Together with 1111220029, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111219987 and 1111220014.

It is not a weakly prime, because it can be changed into another prime (1111220021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555610013 + 555610014.

It is an arithmetic number, because the mean of its divisors is an integer number (555610014).

Almost surely, 2^1111220027 is an apocalyptic number.

1111220027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111220027 is an equidigital number, since it uses as much as digits as its factorization.

1111220027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 1111220027 is about 33334.9670316321. The cubic root of 1111220027 is about 1035.7780102446.

Adding to 1111220027 its reverse (7200221111), we get a palindrome (8311441138).

The spelling of 1111220027 in words is "one billion, one hundred eleven million, two hundred twenty thousand, twenty-seven".