1001020011983 has 4 divisors (see below), whose sum is σ = 1001034305640. Its totient is φ = 1001005718328.

The previous prime is 1001020011967. The next prime is 1001020011997. The reversal of 1001020011983 is 3891100201001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001020011983 - 2⁴ = 1001020011967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001020011913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7041260 + ... + 7182017.

It is an arithmetic number, because the mean of its divisors is an integer number (250258576410).

Almost surely, 2^{1001020011983} is an apocalyptic number.

1001020011983 is a deficient number, since it is larger than the sum of its proper divisors (14293657).

1001020011983 is an equidigital number, since it uses as much as digits as its factorization.

1001020011983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14293656.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 1001020011983 its reverse (3891100201001), we get a palindrome (4892120212984).

The spelling of 1001020011983 in words is "one trillion, one billion, twenty million, eleven thousand, nine hundred eighty-three".