21300311223 has 6 divisors (see below), whose sum is σ = 30767116224. Its totient is φ = 14200207476.

The previous prime is 21300311213. The next prime is 21300311233. The reversal of 21300311223 is 32211300312.

21300311223 is a `hidden beast` number, since 2 + 130 + 0 + 311 + 223 = 666.

It is an interprime number because it is at equal distance from previous prime (21300311213) and next prime (21300311233).

It is not a de Polignac number, because 21300311223 - 2⁹ = 21300310711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21300311196 and 21300311205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300311213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1183350615 + ... + 1183350632.

It is an arithmetic number, because the mean of its divisors is an integer number (5127852704).

Almost surely, 2^21300311223 is an apocalyptic number.

21300311223 is a deficient number, since it is larger than the sum of its proper divisors (9466805001).

21300311223 is a wasteful number, since it uses less digits than its factorization.

21300311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366701253 (or 2366701250 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21300311223 its reverse (32211300312), we get a palindrome (53511611535).

The spelling of 21300311223 in words is "twenty-one billion, three hundred million, three hundred eleven thousand, two hundred twenty-three".