21211202002103 has 8 divisors (see below), whose sum is σ = 21718298504688. Its totient is φ = 20709708776064.

The previous prime is 21211202002063. The next prime is 21211202002157. The reversal of 21211202002103 is 30120020211212.

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

It is a cyclic number.

It is not a de Polignac number, because 21211202002103 - 2¹⁰ = 21211202001079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211202032103) 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, 1400811476 + ... + 1400826617.

It is an arithmetic number, because the mean of its divisors is an integer number (2714787313086).

Almost surely, 2^{21211202002103} is an apocalyptic number.

21211202002103 is a deficient number, since it is larger than the sum of its proper divisors (507096502585).

21211202002103 is a wasteful number, since it uses less digits than its factorization.

21211202002103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801638273.

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

Adding to 21211202002103 its reverse (30120020211212), we get a palindrome (51331222213315).

The spelling of 21211202002103 in words is "twenty-one trillion, two hundred eleven billion, two hundred two million, two thousand, one hundred three".