21314641223 has 4 divisors (see below), whose sum is σ = 21345849288. Its totient is φ = 21283433160.

The previous prime is 21314641217. The next prime is 21314641301. The reversal of 21314641223 is 32214641312.

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 21314641223 - 2¹⁰ = 21314640199 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 (21314641723) 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, 15603008 + ... + 15604373.

It is an arithmetic number, because the mean of its divisors is an integer number (5336462322).

Almost surely, 2^21314641223 is an apocalyptic number.

21314641223 is a deficient number, since it is larger than the sum of its proper divisors (31208065).

21314641223 is an equidigital number, since it uses as much as digits as its factorization.

21314641223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31208064.

The product of its digits is 6912, while the sum is 29.

The spelling of 21314641223 in words is "twenty-one billion, three hundred fourteen million, six hundred forty-one thousand, two hundred twenty-three".