21223023230213 has 8 divisors (see below), whose sum is σ = 25681641556032. Its totient is φ = 17121094370496.

The previous prime is 21223023230159. The next prime is 21223023230273. The reversal of 21223023230213 is 31203232032212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21223023230213 - 2⁸ = 21223023229957 is a prime.

It is a super-3 number, since 3×21223023230213³ (a number of 41 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223023230273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89172366395 + ... + 89172366632.

It is an arithmetic number, because the mean of its divisors is an integer number (3210205194504).

Almost surely, 2^{21223023230213} is an apocalyptic number.

It is an amenable number.

21223023230213 is a deficient number, since it is larger than the sum of its proper divisors (4458618325819).

21223023230213 is a wasteful number, since it uses less digits than its factorization.

21223023230213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178344733051.

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

Adding to 21223023230213 its reverse (31203232032212), we get a palindrome (52426255262425).

The spelling of 21223023230213 in words is "twenty-one trillion, two hundred twenty-three billion, twenty-three million, two hundred thirty thousand, two hundred thirteen".