1021101100985 has 32 divisors (see below), whose sum is σ = 1402317176832. Its totient is φ = 699209210880.

The previous prime is 1021101100969. The next prime is 1021101101029. The reversal of 1021101100985 is 5890011011201.

It is not a de Polignac number, because 1021101100985 - 2⁴ = 1021101100969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166218824 + ... + 166224966.

It is an arithmetic number, because the mean of its divisors is an integer number (43822411776).

Almost surely, 2^{1021101100985} is an apocalyptic number.

It is an amenable number.

1021101100985 is a deficient number, since it is larger than the sum of its proper divisors (381216075847).

1021101100985 is an equidigital number, since it uses as much as digits as its factorization.

1021101100985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11993.

The product of its (nonzero) digits is 720, while the sum is 29.

The spelling of 1021101100985 in words is "one trillion, twenty-one billion, one hundred one million, one hundred thousand, nine hundred eighty-five".