21131100233223 has 8 divisors (see below), whose sum is σ = 29399791628928. Its totient is φ = 13474904496504.

The previous prime is 21131100233171. The next prime is 21131100233239. The reversal of 21131100233223 is 32233200113112.

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

It is not a de Polignac number, because 21131100233223 - 2¹⁰ = 21131100232199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21131100233193 and 21131100233202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131100233263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153123914665 + ... + 153123914802.

It is an arithmetic number, because the mean of its divisors is an integer number (3674973953616).

Almost surely, 2^{21131100233223} is an apocalyptic number.

21131100233223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21131100233223 is a deficient number, since it is larger than the sum of its proper divisors (8268691395705).

21131100233223 is a wasteful number, since it uses less digits than its factorization.

21131100233223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306247829493.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21131100233223 its reverse (32233200113112), we get a palindrome (53364300346335).

The spelling of 21131100233223 in words is "twenty-one trillion, one hundred thirty-one billion, one hundred million, two hundred thirty-three thousand, two hundred twenty-three".