21323341223 has 4 divisors (see below), whose sum is σ = 22445622360. Its totient is φ = 20201060088.

The previous prime is 21323341219. The next prime is 21323341271. The reversal of 21323341223 is 32214332312.

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 21323341223 - 2² = 21323341219 is a prime.

It is a super-2 number, since 2×21323341223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21323341192 and 21323341201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323346223) 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, 561140540 + ... + 561140577.

It is an arithmetic number, because the mean of its divisors is an integer number (5611405590).

Almost surely, 2^21323341223 is an apocalyptic number.

21323341223 is a deficient number, since it is larger than the sum of its proper divisors (1122281137).

21323341223 is a wasteful number, since it uses less digits than its factorization.

21323341223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122281136.

The product of its digits is 5184, while the sum is 26.

Adding to 21323341223 its reverse (32214332312), we get a palindrome (53537673535).

The spelling of 21323341223 in words is "twenty-one billion, three hundred twenty-three million, three hundred forty-one thousand, two hundred twenty-three".