212442140512 has 72 divisors (see below), whose sum is σ = 486627183000. Its totient is φ = 91028528640.

The previous prime is 212442140509. The next prime is 212442140513. The reversal of 212442140512 is 215041244212.

212442140512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212442140513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10481364 + ... + 10501612.

It is an arithmetic number, because the mean of its divisors is an integer number (6758710875).

Almost surely, 2^212442140512 is an apocalyptic number.

It is an amenable number.

212442140512 is an abundant number, since it is smaller than the sum of its proper divisors (274185042488).

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

212442140512 is a wasteful number, since it uses less digits than its factorization.

212442140512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26964 (or 26949 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 212442140512 its reverse (215041244212), we get a palindrome (427483384724).

The spelling of 212442140512 in words is "two hundred twelve billion, four hundred forty-two million, one hundred forty thousand, five hundred twelve".