1112021000281 has 2 divisors, whose sum is σ = 1112021000282. Its totient is φ = 1112021000280.

The previous prime is 1112021000269. The next prime is 1112021000297. The reversal of 1112021000281 is 1820001202111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 766647341056 + 345373659225 = 875584^2 + 587685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112021000281 - 2⁵ = 1112021000249 is a prime.

It is a super-2 number, since 2×1112021000281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1112021000081) 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, 556010500140 + 556010500141.

It is an arithmetic number, because the mean of its divisors is an integer number (556010500141).

Almost surely, 2^{1112021000281} is an apocalyptic number.

It is an amenable number.

1112021000281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112021000281 is an equidigital number, since it uses as much as digits as its factorization.

1112021000281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 1112021000281 its reverse (1820001202111), we get a palindrome (2932022202392).

The spelling of 1112021000281 in words is "one trillion, one hundred twelve billion, twenty-one million, two hundred eighty-one", and thus it is an aban number.