2102001001002 has 160 divisors (see below), whose sum is σ = 5896080875520. Its totient is φ = 545752650240.

The previous prime is 2102001000997. The next prime is 2102001001043. The reversal of 2102001001002 is 2001001002012.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1320874 + ... + 2438997.

It is an arithmetic number, because the mean of its divisors is an integer number (36850505472).

Almost surely, 2^{2102001001002} is an apocalyptic number.

2102001001002 is an abundant number, since it is smaller than the sum of its proper divisors (3794079874518).

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

2102001001002 is a wasteful number, since it uses less digits than its factorization.

2102001001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759938 (or 3759929 counting only the distinct ones).

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

Adding to 2102001001002 its reverse (2001001002012), we get a palindrome (4103002003014).

The spelling of 2102001001002 in words is "two trillion, one hundred two billion, one million, one thousand, two".