213120203223 has 16 divisors (see below), whose sum is σ = 290359259136. Its totient is φ = 138983829600.

The previous prime is 213120203221. The next prime is 213120203227. The reversal of 213120203223 is 322302021312.

It is a happy number.

It is not a de Polignac number, because 213120203223 - 2¹ = 213120203221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213120203223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120203221) 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 15 ways as a sum of consecutive naturals, for example, 129511 + ... + 665592.

It is an arithmetic number, because the mean of its divisors is an integer number (18147453696).

Almost surely, 2^213120203223 is an apocalyptic number.

213120203223 is a deficient number, since it is larger than the sum of its proper divisors (77239055913).

213120203223 is a wasteful number, since it uses less digits than its factorization.

213120203223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797054.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 213120203223 its reverse (322302021312), we get a palindrome (535422224535).

The spelling of 213120203223 in words is "two hundred thirteen billion, one hundred twenty million, two hundred three thousand, two hundred twenty-three".