212144213442 has 64 divisors (see below), whose sum is σ = 532614481920. Its totient is φ = 54925858944.

The previous prime is 212144213441. The next prime is 212144213471. The reversal of 212144213442 is 244312441212.

212144213442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212144213441) 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 31 ways as a sum of consecutive naturals, for example, 5760883 + ... + 5797590.

It is an arithmetic number, because the mean of its divisors is an integer number (8322101280).

Almost surely, 2^212144213442 is an apocalyptic number.

212144213442 is an abundant number, since it is smaller than the sum of its proper divisors (320470268478).

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

212144213442 is a wasteful number, since it uses less digits than its factorization.

212144213442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11558527.

The product of its digits is 12288, while the sum is 30.

Adding to 212144213442 its reverse (244312441212), we get a palindrome (456456654654).

The spelling of 212144213442 in words is "two hundred twelve billion, one hundred forty-four million, two hundred thirteen thousand, four hundred forty-two".