212420535344 has 80 divisors (see below), whose sum is σ = 439030233600. Its totient is φ = 99274076928.

The previous prime is 212420535343. The next prime is 212420535361. The reversal of 212420535344 is 443535024212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212420535343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47381327 + ... + 47385809.

It is an arithmetic number, because the mean of its divisors is an integer number (5487877920).

Almost surely, 2^212420535344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212420535344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219515116800).

212420535344 is an abundant number, since it is smaller than the sum of its proper divisors (226609698256).

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

212420535344 is a wasteful number, since it uses less digits than its factorization.

212420535344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562 (or 6556 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 212420535344 its reverse (443535024212), we get a palindrome (655955559556).

The spelling of 212420535344 in words is "two hundred twelve billion, four hundred twenty million, five hundred thirty-five thousand, three hundred forty-four".