213203021103 has 20 divisors (see below), whose sum is σ = 335251016760. Its totient is φ = 134654538672.

The previous prime is 213203021069. The next prime is 213203021123. The reversal of 213203021103 is 301120302312.

It is not a de Polignac number, because 213203021103 - 2¹⁸ = 213202758959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213203021123) 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 19 ways as a sum of consecutive naturals, for example, 69265200 + ... + 69268277.

It is an arithmetic number, because the mean of its divisors is an integer number (16762550838).

Almost surely, 2^213203021103 is an apocalyptic number.

213203021103 is a deficient number, since it is larger than the sum of its proper divisors (122047995657).

213203021103 is a wasteful number, since it uses less digits than its factorization.

213203021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138533508 (or 138533499 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 213203021103 its reverse (301120302312), we get a palindrome (514323323415).

The spelling of 213203021103 in words is "two hundred thirteen billion, two hundred three million, twenty-one thousand, one hundred three".