21211103032133 has 16 divisors (see below), whose sum is σ = 24765818880000. Its totient is φ = 18159014036016.

The previous prime is 21211103032127. The next prime is 21211103032157. The reversal of 21211103032133 is 33123030111212.

It is not a de Polignac number, because 21211103032133 - 2⁴ = 21211103032117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21211103032099 and 21211103032108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211103032123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37013573 + ... + 37582266.

It is an arithmetic number, because the mean of its divisors is an integer number (1547863680000).

Almost surely, 2^{21211103032133} is an apocalyptic number.

It is an amenable number.

21211103032133 is a deficient number, since it is larger than the sum of its proper divisors (3554715847867).

21211103032133 is an frugal number, since it uses more digits than its factorization.

21211103032133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74596689 (or 74596675 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21211103032133 its reverse (33123030111212), we get a palindrome (54334133143345).

The spelling of 21211103032133 in words is "twenty-one trillion, two hundred eleven billion, one hundred three million, thirty-two thousand, one hundred thirty-three".