213000322123 has 4 divisors (see below), whose sum is σ = 219871300288. Its totient is φ = 206129343960.

The previous prime is 213000322091. The next prime is 213000322163. The reversal of 213000322123 is 321223000312.

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 213000322123 - 2⁵ = 213000322091 is a prime.

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 213000322123.

It is not an unprimeable number, because it can be changed into a prime (213000322163) 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 3 ways as a sum of consecutive naturals, for example, 3435489036 + ... + 3435489097.

It is an arithmetic number, because the mean of its divisors is an integer number (54967825072).

Almost surely, 2^213000322123 is an apocalyptic number.

213000322123 is a deficient number, since it is larger than the sum of its proper divisors (6870978165).

213000322123 is an equidigital number, since it uses as much as digits as its factorization.

213000322123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6870978164.

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

Adding to 213000322123 its reverse (321223000312), we get a palindrome (534223322435).

The spelling of 213000322123 in words is "two hundred thirteen billion, three hundred twenty-two thousand, one hundred twenty-three".