21341204223 has 4 divisors (see below), whose sum is σ = 28454938968. Its totient is φ = 14227469480.

The previous prime is 21341204221. The next prime is 21341204231. The reversal of 21341204223 is 32240214312.

It is a happy number.

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 21341204223 - 2¹ = 21341204221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21341204193 and 21341204202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341204221) 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, 3556867368 + ... + 3556867373.

It is an arithmetic number, because the mean of its divisors is an integer number (7113734742).

Almost surely, 2^21341204223 is an apocalyptic number.

21341204223 is a deficient number, since it is larger than the sum of its proper divisors (7113734745).

21341204223 is an equidigital number, since it uses as much as digits as its factorization.

21341204223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7113734744.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21341204223 its reverse (32240214312), we get a palindrome (53581418535).

The spelling of 21341204223 in words is "twenty-one billion, three hundred forty-one million, two hundred four thousand, two hundred twenty-three".