212111311203 has 120 divisors (see below), whose sum is σ = 352475323200. Its totient is φ = 127015257600.

The previous prime is 212111311169. The next prime is 212111311219. The reversal of 212111311203 is 302113111212.

It is not a de Polignac number, because 212111311203 - 2⁸ = 212111310947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212111311703) 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 119 ways as a sum of consecutive naturals, for example, 492137398 + ... + 492137828.

It is an arithmetic number, because the mean of its divisors is an integer number (2937294360).

Almost surely, 2^212111311203 is an apocalyptic number.

212111311203 is a deficient number, since it is larger than the sum of its proper divisors (140364011997).

212111311203 is a wasteful number, since it uses less digits than its factorization.

212111311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 212111311203 its reverse (302113111212), we get a palindrome (514224422415).

Subtracting 212111311203 from its reverse (302113111212), we obtain a square (90001800009 = 300003²).

The spelling of 212111311203 in words is "two hundred twelve billion, one hundred eleven million, three hundred eleven thousand, two hundred three".