213120223 has 4 divisors (see below), whose sum is σ = 214396560. Its totient is φ = 211843888.

The previous prime is 213120197. The next prime is 213120239. The reversal of 213120223 is 322021312.

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 213120223 - 2¹⁷ = 212989151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213120197 and 213120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637918 + ... + 638251.

It is an arithmetic number, because the mean of its divisors is an integer number (53599140).

Almost surely, 2^213120223 is an apocalyptic number.

213120223 is a deficient number, since it is larger than the sum of its proper divisors (1276337).

213120223 is a wasteful number, since it uses less digits than its factorization.

213120223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276336.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213120223 is about 14598.6377104167. The cubic root of 213120223 is about 597.3216012393.

Adding to 213120223 its reverse (322021312), we get a palindrome (535141535).

The spelling of 213120223 in words is "two hundred thirteen million, one hundred twenty thousand, two hundred twenty-three".