213212003123 has 4 divisors (see below), whose sum is σ = 243670860720. Its totient is φ = 182753145528.

The previous prime is 213212003063. The next prime is 213212003149. The reversal of 213212003123 is 321300212312.

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 213212003123 - 2⁸ = 213212002867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213212003095 and 213212003104.

It is not an unprimeable number, because it can be changed into a prime (213212002123) 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, 15229428788 + ... + 15229428801.

It is an arithmetic number, because the mean of its divisors is an integer number (60917715180).

Almost surely, 2^213212003123 is an apocalyptic number.

213212003123 is a deficient number, since it is larger than the sum of its proper divisors (30458857597).

213212003123 is an equidigital number, since it uses as much as digits as its factorization.

213212003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30458857596.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213212003123 its reverse (321300212312), we get a palindrome (534512215435).

The spelling of 213212003123 in words is "two hundred thirteen billion, two hundred twelve million, three thousand, one hundred twenty-three".