21002002201002 has 16 divisors (see below), whose sum is σ = 43028492314752. Its totient is φ = 6829919414880.

The previous prime is 21002002201001. The next prime is 21002002201007. The reversal of 21002002201002 is 20010220020012.

It is not an unprimeable number, because it can be changed into a prime (21002002201001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42686996098 + ... + 42686996589.

It is an arithmetic number, because the mean of its divisors is an integer number (2689280769672).

Almost surely, 2^{21002002201002} is an apocalyptic number.

21002002201002 is an abundant number, since it is smaller than the sum of its proper divisors (22026490113750).

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

21002002201002 is a wasteful number, since it uses less digits than its factorization.

21002002201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85373992733.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21002002201002 its reverse (20010220020012), we get a palindrome (41012222221014).

The spelling of 21002002201002 in words is "twenty-one trillion, two billion, two million, two hundred one thousand, two".