21103020203211 has 24 divisors (see below), whose sum is σ = 31002087270960. Its totient is φ = 13828755385536.

The previous prime is 21103020203147. The next prime is 21103020203249. The reversal of 21103020203211 is 11230202030112.

21103020203211 is a `hidden beast` number, since 2 + 110 + 30 + 202 + 0 + 321 + 1 = 666.

It is not a de Polignac number, because 21103020203211 - 2⁶ = 21103020203147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21103020203281) 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 23 ways as a sum of consecutive naturals, for example, 2887285 + ... + 7109321.

It is an arithmetic number, because the mean of its divisors is an integer number (1291753636290).

Almost surely, 2^{21103020203211} is an apocalyptic number.

21103020203211 is a deficient number, since it is larger than the sum of its proper divisors (9899067067749).

21103020203211 is a wasteful number, since it uses less digits than its factorization.

21103020203211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231515 (or 4231512 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21103020203211 its reverse (11230202030112), we get a palindrome (32333222233323).

The spelling of 21103020203211 in words is "twenty-one trillion, one hundred three billion, twenty million, two hundred three thousand, two hundred eleven".