212643511512 has 16 divisors (see below), whose sum is σ = 531608778840. Its totient is φ = 70881170496.

The previous prime is 212643511511. The next prime is 212643511513. The reversal of 212643511512 is 215115346212.

It is an interprime number because it is at equal distance from previous prime (212643511511) and next prime (212643511513).

It is a super-2 number, since 2×212643511512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212643511511) 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 3 ways as a sum of consecutive naturals, for example, 4430073133 + ... + 4430073180.

Almost surely, 2^212643511512 is an apocalyptic number.

It is an amenable number.

212643511512 is an abundant number, since it is smaller than the sum of its proper divisors (318965267328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212643511512 is a wasteful number, since it uses less digits than its factorization.

212643511512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8860146322 (or 8860146318 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

Adding to 212643511512 its reverse (215115346212), we get a palindrome (427758857724).

The spelling of 212643511512 in words is "two hundred twelve billion, six hundred forty-three million, five hundred eleven thousand, five hundred twelve".