213021323013223 has 4 divisors (see below), whose sum is σ = 213100424881128. Its totient is φ = 212942221145320.

The previous prime is 213021323013173. The next prime is 213021323013241. The reversal of 213021323013223 is 322310323120312.

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 213021323013223 - 2³³ = 213012733078631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213021323013191 and 213021323013200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213021323013923) 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, 39550929913 + ... + 39550935298.

It is an arithmetic number, because the mean of its divisors is an integer number (53275106220282).

Almost surely, 2^{213021323013223} is an apocalyptic number.

213021323013223 is a deficient number, since it is larger than the sum of its proper divisors (79101867905).

213021323013223 is an equidigital number, since it uses as much as digits as its factorization.

213021323013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79101867904.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 213021323013223 its reverse (322310323120312), we get a palindrome (535331646133535).

The spelling of 213021323013223 in words is "two hundred thirteen trillion, twenty-one billion, three hundred twenty-three million, thirteen thousand, two hundred twenty-three".