213321111103 has 4 divisors (see below), whose sum is σ = 213994048680. Its totient is φ = 212648173528.

The previous prime is 213321111023. The next prime is 213321111131. The reversal of 213321111103 is 301111123312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213321111103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213321111403) 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, 336468313 + ... + 336468946.

It is an arithmetic number, because the mean of its divisors is an integer number (53498512170).

Almost surely, 2^213321111103 is an apocalyptic number.

213321111103 is a deficient number, since it is larger than the sum of its proper divisors (672937577).

213321111103 is an equidigital number, since it uses as much as digits as its factorization.

213321111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672937576.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 213321111103 its reverse (301111123312), we get a palindrome (514432234415).

The spelling of 213321111103 in words is "two hundred thirteen billion, three hundred twenty-one million, one hundred eleven thousand, one hundred three".