1002002011002 has 24 divisors (see below), whose sum is σ = 2171076747840. Its totient is φ = 333989533320.

The previous prime is 1002002011001. The next prime is 1002002011009. The reversal of 1002002011002 is 2001102002001.

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

It is not an unprimeable number, because it can be changed into a prime (1002002011001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364002 + ... + 1461677.

It is an arithmetic number, because the mean of its divisors is an integer number (90461531160).

Almost surely, 2^{1002002011002} is an apocalyptic number.

1002002011002 is an abundant number, since it is smaller than the sum of its proper divisors (1169074736838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002002011002 is a wasteful number, since it uses less digits than its factorization.

1002002011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856178 (or 1856175 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1002002011002 its reverse (2001102002001), we get a palindrome (3003104013003).

Subtracting 1002002011002 from its reverse (2001102002001), we obtain a palindrome (999099990999).

The spelling of 1002002011002 in words is "one trillion, two billion, two million, eleven thousand, two".