21223214023 has 12 divisors (see below), whose sum is σ = 23958487000. Its totient is φ = 18772372080.

The previous prime is 21223214011. The next prime is 21223214029. The reversal of 21223214023 is 32041232212.

It is not a de Polignac number, because 21223214023 - 2²⁵ = 21189659591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21223213985 and 21223214003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223214029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2365773 + ... + 2374726.

Almost surely, 2^21223214023 is an apocalyptic number.

21223214023 is a deficient number, since it is larger than the sum of its proper divisors (2735272977).

21223214023 is a wasteful number, since it uses less digits than its factorization.

21223214023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740558 (or 4740547 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21223214023 its reverse (32041232212), we get a palindrome (53264446235).

The spelling of 21223214023 in words is "twenty-one billion, two hundred twenty-three million, two hundred fourteen thousand, twenty-three".