213211103 has 48 divisors (see below), whose sum is σ = 277020000. Its totient is φ = 162908928.

The previous prime is 213211099. The next prime is 213211139. The reversal of 213211103 is 301112312.

It is not a de Polignac number, because 213211103 - 2² = 213211099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213211703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1430873 + ... + 1431021.

It is an arithmetic number, because the mean of its divisors is an integer number (5771250).

Almost surely, 2^213211103 is an apocalyptic number.

213211103 is a deficient number, since it is larger than the sum of its proper divisors (63808897).

213211103 is a wasteful number, since it uses less digits than its factorization.

213211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 213211103 is about 14601.7499978598. The cubic root of 213211103 is about 597.4064936568.

Adding to 213211103 its reverse (301112312), we get a palindrome (514323415).

The spelling of 213211103 in words is "two hundred thirteen million, two hundred eleven thousand, one hundred three".