212312103213 has 16 divisors (see below), whose sum is σ = 333959438336. Its totient is φ = 117407614320.

The previous prime is 212312103191. The next prime is 212312103247. The reversal of 212312103213 is 312301213212.

It is not a de Polignac number, because 212312103213 - 2⁶ = 212312103149 is a prime.

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

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 212312103213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212312103293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163065481 + ... + 163066782.

It is an arithmetic number, because the mean of its divisors is an integer number (20872464896).

Almost surely, 2^212312103213 is an apocalyptic number.

It is an amenable number.

212312103213 is a deficient number, since it is larger than the sum of its proper divisors (121647335123).

212312103213 is a wasteful number, since it uses less digits than its factorization.

212312103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326132304.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212312103213 its reverse (312301213212), we get a palindrome (524613316425).

The spelling of 212312103213 in words is "two hundred twelve billion, three hundred twelve million, one hundred three thousand, two hundred thirteen".