21211120302002 has 8 divisors (see below), whose sum is σ = 31816901008812. Its totient is φ = 10605486632400.

The previous prime is 21211120301993. The next prime is 21211120302013. The reversal of 21211120302002 is 20020302111212.

It can be written as a sum of positive squares in 2 ways, for example, as 16366547622481 + 4844572679521 = 4045559^2 + 2201039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 36397949 + ... + 36976112.

Almost surely, 2^{21211120302002} is an apocalyptic number.

21211120302002 is a deficient number, since it is larger than the sum of its proper divisors (10605780706810).

21211120302002 is a wasteful number, since it uses less digits than its factorization.

21211120302002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73518604.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21211120302002 its reverse (20020302111212), we get a palindrome (41231422413214).

The spelling of 21211120302002 in words is "twenty-one trillion, two hundred eleven billion, one hundred twenty million, three hundred two thousand, two".