1121111021087 has 2 divisors, whose sum is σ = 1121111021088. Its totient is φ = 1121111021086.

The previous prime is 1121111021071. The next prime is 1121111021137. The reversal of 1121111021087 is 7801201111211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121111021087 - 2⁴ = 1121111021071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121111021587) 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, 560555510543 + 560555510544.

It is an arithmetic number, because the mean of its divisors is an integer number (560555510544).

Almost surely, 2^{1121111021087} is an apocalyptic number.

1121111021087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121111021087 is an equidigital number, since it uses as much as digits as its factorization.

1121111021087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 26.

Adding to 1121111021087 its reverse (7801201111211), we get a palindrome (8922312132298).

The spelling of 1121111021087 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, twenty-one thousand, eighty-seven".