211305305312 has 12 divisors (see below), whose sum is σ = 416007319896. Its totient is φ = 105652652640.

The previous prime is 211305305303. The next prime is 211305305317. The reversal of 211305305312 is 213503503112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211305305317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3301645364 + ... + 3301645427.

It is an arithmetic number, because the mean of its divisors is an integer number (34667276658).

Almost surely, 2^211305305312 is an apocalyptic number.

It is an amenable number.

211305305312 is a deficient number, since it is larger than the sum of its proper divisors (204702014584).

211305305312 is an equidigital number, since it uses as much as digits as its factorization.

211305305312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6603290801 (or 6603290793 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 211305305312 its reverse (213503503112), we get a palindrome (424808808424).

The spelling of 211305305312 in words is "two hundred eleven billion, three hundred five million, three hundred five thousand, three hundred twelve".