21214302324223 has 4 divisors (see below), whose sum is σ = 22462202460960. Its totient is φ = 19966402187488.

The previous prime is 21214302324199. The next prime is 21214302324233. The reversal of 21214302324223 is 32242320341212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21214302324223 - 2²⁹ = 21213765453311 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 (21214302324233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623950068343 + ... + 623950068376.

It is an arithmetic number, because the mean of its divisors is an integer number (5615550615240).

Almost surely, 2^{21214302324223} is an apocalyptic number.

21214302324223 is a deficient number, since it is larger than the sum of its proper divisors (1247900136737).

21214302324223 is a wasteful number, since it uses less digits than its factorization.

21214302324223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247900136736.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 21214302324223 its reverse (32242320341212), we get a palindrome (53456622665435).

The spelling of 21214302324223 in words is "twenty-one trillion, two hundred fourteen billion, three hundred two million, three hundred twenty-four thousand, two hundred twenty-three".