1002001111111 has 16 divisors (see below), whose sum is σ = 1345344150528. Its totient is φ = 720720079200.

The previous prime is 1002001111091. The next prime is 1002001111129. The reversal of 1002001111111 is 1111111002001.

It is not a de Polignac number, because 1002001111111 - 2⁷ = 1002001110983 is a prime.

1002001111111 is a modest number, since divided by 1111111 gives 100200 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002001111141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500499055 + ... + 500501056.

It is an arithmetic number, because the mean of its divisors is an integer number (84084009408).

Almost surely, 2^{1002001111111} is an apocalyptic number.

1002001111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1002001111111 is a deficient number, since it is larger than the sum of its proper divisors (343343039417).

1002001111111 is a wasteful number, since it uses less digits than its factorization.

1002001111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001000142.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1002001111111 its reverse (1111111002001), we get a palindrome (2113112113112).

It can be divided in two parts, 1002001 and 111111, that multiplied together give a palindrome (111333333111).

The spelling of 1002001111111 in words is "one trillion, two billion, one million, one hundred eleven thousand, one hundred eleven".