21002113232102 has 8 divisors (see below), whose sum is σ = 31503199733112. Its totient is φ = 10501046654400.

The previous prime is 21002113232059. The next prime is 21002113232197. The reversal of 21002113232102 is 20123231120012.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1985099 + ... + 6778262.

It is an arithmetic number, because the mean of its divisors is an integer number (3937899966639).

Almost surely, 2^{21002113232102} is an apocalyptic number.

21002113232102 is a deficient number, since it is larger than the sum of its proper divisors (10501086501010).

21002113232102 is a wasteful number, since it uses less digits than its factorization.

21002113232102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961654.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21002113232102 its reverse (20123231120012), we get a palindrome (41125344352114).

The spelling of 21002113232102 in words is "twenty-one trillion, two billion, one hundred thirteen million, two hundred thirty-two thousand, one hundred two".