1002100021002 has 48 divisors (see below), whose sum is σ = 2248764336000. Its totient is φ = 322130404512.

The previous prime is 1002100020923. The next prime is 1002100021019. The reversal of 1002100021002 is 2001200012001.

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 23 ways as a sum of consecutive naturals, for example, 706102 + ... + 1582017.

It is an arithmetic number, because the mean of its divisors is an integer number (46849257000).

Almost surely, 2^{1002100021002} is an apocalyptic number.

1002100021002 is an abundant number, since it is smaller than the sum of its proper divisors (1246664314998).

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

1002100021002 is a wasteful number, since it uses less digits than its factorization.

1002100021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288995 (or 2288992 counting only the distinct ones).

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

Adding to 1002100021002 its reverse (2001200012001), we get a palindrome (3003300033003).

Subtracting 1002100021002 from its reverse (2001200012001), we obtain a palindrome (999099990999).

The spelling of 1002100021002 in words is "one trillion, two billion, one hundred million, twenty-one thousand, two".