212101323344240 has 80 divisors (see below), whose sum is σ = 537999740250336. Its totient is φ = 77122928640000.

The previous prime is 212101323344237. The next prime is 212101323344297. The reversal of 212101323344240 is 42443323101212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 212101323344197 and 212101323344206.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6549344 + ... + 21612416.

Almost surely, 2^{212101323344240} is an apocalyptic number.

212101323344240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101323344240 is an abundant number, since it is smaller than the sum of its proper divisors (325898416906096).

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

212101323344240 is a wasteful number, since it uses less digits than its factorization.

212101323344240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15079098 (or 15079092 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 212101323344240 its reverse (42443323101212), we get a palindrome (254544646445452).

The spelling of 212101323344240 in words is "two hundred twelve trillion, one hundred one billion, three hundred twenty-three million, three hundred forty-four thousand, two hundred forty".