211403202103 has 4 divisors (see below), whose sum is σ = 211434111328. Its totient is φ = 211372292880.

The previous prime is 211403202089. The next prime is 211403202149. The reversal of 211403202103 is 301202304112.

It is a happy number.

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-211403202103 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 (211403203103) 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, 15444351 + ... + 15458032.

It is an arithmetic number, because the mean of its divisors is an integer number (52858527832).

Almost surely, 2^211403202103 is an apocalyptic number.

211403202103 is a deficient number, since it is larger than the sum of its proper divisors (30909225).

211403202103 is an equidigital number, since it uses as much as digits as its factorization.

211403202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30909224.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 211403202103 its reverse (301202304112), we get a palindrome (512605506215).

The spelling of 211403202103 in words is "two hundred eleven billion, four hundred three million, two hundred two thousand, one hundred three".