213020330123 has 4 divisors (see below), whose sum is σ = 213223014648. Its totient is φ = 212817645600.

The previous prime is 213020330093. The next prime is 213020330147. The reversal of 213020330123 is 321033020312.

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 213020330123 - 2⁶ = 213020330059 is a prime.

It is a super-2 number, since 2×213020330123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213020330095 and 213020330104.

It is not an unprimeable number, because it can be changed into a prime (213020330153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101340686 + ... + 101342787.

It is an arithmetic number, because the mean of its divisors is an integer number (53305753662).

Almost surely, 2^213020330123 is an apocalyptic number.

213020330123 is a deficient number, since it is larger than the sum of its proper divisors (202684525).

213020330123 is a wasteful number, since it uses less digits than its factorization.

213020330123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202684524.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 213020330123 its reverse (321033020312), we get a palindrome (534053350435).

The spelling of 213020330123 in words is "two hundred thirteen billion, twenty million, three hundred thirty thousand, one hundred twenty-three".