21232100203101 has 12 divisors (see below), whose sum is σ = 30910074138112. Its totient is φ = 14043278873736.

The previous prime is 21232100203087. The next prime is 21232100203103. The reversal of 21232100203101 is 10130200123212.

21232100203101 is a `hidden beast` number, since 2 + 1 + 232 + 100 + 20 + 310 + 1 = 666.

It is not a de Polignac number, because 21232100203101 - 2¹⁸ = 21232099940957 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 (21232100203103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9287881711 + ... + 9287883996.

Almost surely, 2^{21232100203101} is an apocalyptic number.

It is an amenable number.

21232100203101 is a deficient number, since it is larger than the sum of its proper divisors (9677973935011).

21232100203101 is a wasteful number, since it uses less digits than its factorization.

21232100203101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18575765840 (or 18575765837 counting only the distinct ones).

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

Adding to 21232100203101 its reverse (10130200123212), we get a palindrome (31362300326313).

The spelling of 21232100203101 in words is "twenty-one trillion, two hundred thirty-two billion, one hundred million, two hundred three thousand, one hundred one".