1121001000985 has 16 divisors (see below), whose sum is σ = 1361937628800. Its totient is φ = 885667209856.

The previous prime is 1121001000979. The next prime is 1121001000991. The reversal of 1121001000985 is 5890001001211.

It is an interprime number because it is at equal distance from previous prime (1121001000979) and next prime (1121001000991).

It is a cyclic number.

It is not a de Polignac number, because 1121001000985 - 2¹⁷ = 1121000869913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127899 + ... + 1874608.

It is an arithmetic number, because the mean of its divisors is an integer number (85121101800).

Almost surely, 2^{1121001000985} is an apocalyptic number.

It is an amenable number.

1121001000985 is a deficient number, since it is larger than the sum of its proper divisors (240936627815).

1121001000985 is an equidigital number, since it uses as much as digits as its factorization.

1121001000985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003440.

The product of its (nonzero) digits is 720, while the sum is 28.

The spelling of 1121001000985 in words is "one trillion, one hundred twenty-one billion, one million, nine hundred eighty-five", and thus it is an aban number.