211304420103 has 64 divisors (see below), whose sum is σ = 333235814400. Its totient is φ = 116604808320.

The previous prime is 211304420099. The next prime is 211304420113. The reversal of 211304420103 is 301024403112.

It is not a de Polignac number, because 211304420103 - 2² = 211304420099 is a prime.

It is a super-2 number, since 2×211304420103² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 211304420103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211304420113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56815678 + ... + 56819396.

It is an arithmetic number, because the mean of its divisors is an integer number (5206809600).

Almost surely, 2^211304420103 is an apocalyptic number.

211304420103 is a deficient number, since it is larger than the sum of its proper divisors (121931394297).

211304420103 is a wasteful number, since it uses less digits than its factorization.

211304420103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 211304420103 its reverse (301024403112), we get a palindrome (512328823215).

The spelling of 211304420103 in words is "two hundred eleven billion, three hundred four million, four hundred twenty thousand, one hundred three".