1002001120011 has 16 divisors (see below), whose sum is σ = 1535633901600. Its totient is φ = 644966237664.

The previous prime is 1002001119971. The next prime is 1002001120019. The reversal of 1002001120011 is 1100211002001.

It is a happy number.

It is not a de Polignac number, because 1002001120011 - 2⁷ = 1002001119883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1002001119975 and 1002001120002.

It is not an unprimeable number, because it can be changed into a prime (1002001120019) 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, 639846676 + ... + 639848241.

It is an arithmetic number, because the mean of its divisors is an integer number (95977118850).

Almost surely, 2^{1002001120011} is an apocalyptic number.

1002001120011 is a deficient number, since it is larger than the sum of its proper divisors (533632781589).

1002001120011 is a wasteful number, since it uses less digits than its factorization.

1002001120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279694955 (or 1279694949 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1002001120011 its reverse (1100211002001), we get a palindrome (2102212122012).

The spelling of 1002001120011 in words is "one trillion, two billion, one million, one hundred twenty thousand, eleven".