1121111220071 has 2 divisors, whose sum is σ = 1121111220072. Its totient is φ = 1121111220070.

The previous prime is 1121111220043. The next prime is 1121111220137. The reversal of 1121111220071 is 1700221111211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121111220071 - 2¹⁰ = 1121111219047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121111225071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560555610035 + 560555610036.

It is an arithmetic number, because the mean of its divisors is an integer number (560555610036).

Almost surely, 2^{1121111220071} is an apocalyptic number.

1121111220071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121111220071 is an equidigital number, since it uses as much as digits as its factorization.

1121111220071 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 20.

Adding to 1121111220071 its reverse (1700221111211), we get a palindrome (2821332331282).

The spelling of 1121111220071 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, seventy-one".