213322123 has 4 divisors (see below), whose sum is σ = 243796720. Its totient is φ = 182847528.

The previous prime is 213322121. The next prime is 213322147. The reversal of 213322123 is 321223312.

213322123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213322123 - 2¹ = 213322121 is a prime.

It is a super-2 number, since 2×213322123² = 91012656322454258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213322123.

It is not an unprimeable number, because it can be changed into a prime (213322121) 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, 15237288 + ... + 15237301.

It is an arithmetic number, because the mean of its divisors is an integer number (60949180).

Almost surely, 2^213322123 is an apocalyptic number.

213322123 is a deficient number, since it is larger than the sum of its proper divisors (30474597).

213322123 is an equidigital number, since it uses as much as digits as its factorization.

213322123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30474596.

The product of its digits is 432, while the sum is 19.

The square root of 213322123 is about 14605.5511022351. The cubic root of 213322123 is about 597.5101664324.

Adding to 213322123 its reverse (321223312), we get a palindrome (534545435).

The spelling of 213322123 in words is "two hundred thirteen million, three hundred twenty-two thousand, one hundred twenty-three".