21103101123133 has 16 divisors (see below), whose sum is σ = 22421831904000. Its totient is φ = 19823822770752.

The previous prime is 21103101123073. The next prime is 21103101123161. The reversal of 21103101123133 is 33132110130112.

It is a cyclic number.

It is not a de Polignac number, because 21103101123133 - 2²⁵ = 21103067568701 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 (21103101123733) 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 15 ways as a sum of consecutive naturals, for example, 23857278 + ... + 24726016.

It is an arithmetic number, because the mean of its divisors is an integer number (1401364494000).

Almost surely, 2^{21103101123133} is an apocalyptic number.

It is an amenable number.

21103101123133 is a deficient number, since it is larger than the sum of its proper divisors (1318730780867).

21103101123133 is a wasteful number, since it uses less digits than its factorization.

21103101123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891444.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21103101123133 its reverse (33132110130112), we get a palindrome (54235211253245).

The spelling of 21103101123133 in words is "twenty-one trillion, one hundred three billion, one hundred one million, one hundred twenty-three thousand, one hundred thirty-three".