212001103 has 4 divisors (see below), whose sum is σ = 212033880. Its totient is φ = 211968328.

The previous prime is 212001079. The next prime is 212001109. The reversal of 212001103 is 301100212.

212001103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-212001103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212001103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001109) 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, 3088 + ... + 20821.

It is an arithmetic number, because the mean of its divisors is an integer number (53008470).

Almost surely, 2^212001103 is an apocalyptic number.

212001103 is a deficient number, since it is larger than the sum of its proper divisors (32777).

212001103 is an equidigital number, since it uses as much as digits as its factorization.

212001103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32776.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 212001103 is about 14560.2576556873. The cubic root of 212001103 is about 596.2742298753.

Adding to 212001103 its reverse (301100212), we get a palindrome (513101315).

The spelling of 212001103 in words is "two hundred twelve million, one thousand, one hundred three".