211211103 has 8 divisors (see below), whose sum is σ = 281708208. Its totient is φ = 140760704.

The previous prime is 211211071. The next prime is 211211123. The reversal of 211211103 is 301112112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211211103 - 2⁵ = 211211071 is a prime.

It is a super-2 number, since 2×211211103² = 89220260060953218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775 + ... + 20567.

It is an arithmetic number, because the mean of its divisors is an integer number (35213526).

Almost surely, 2^211211103 is an apocalyptic number.

211211103 is a deficient number, since it is larger than the sum of its proper divisors (70497105).

211211103 is a wasteful number, since it uses less digits than its factorization.

211211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23353.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 211211103 is about 14533.1036946689. The cubic root of 211211103 is about 595.5326567361.

Adding to 211211103 its reverse (301112112), we get a palindrome (512323215).

The spelling of 211211103 in words is "two hundred eleven million, two hundred eleven thousand, one hundred three".