212224321240 has 32 divisors (see below), whose sum is σ = 478644390000. Its totient is φ = 84687121024.

The previous prime is 212224321229. The next prime is 212224321241. The reversal of 212224321240 is 42123422212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212224321241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6314515 + ... + 6348034.

Almost surely, 2^212224321240 is an apocalyptic number.

212224321240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212224321240 is an abundant number, since it is smaller than the sum of its proper divisors (266420068760).

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

212224321240 is a wasteful number, since it uses less digits than its factorization.

212224321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12662979 (or 12662975 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 212224321240 its reverse (42123422212), we get a palindrome (254347743452).

The spelling of 212224321240 in words is "two hundred twelve billion, two hundred twenty-four million, three hundred twenty-one thousand, two hundred forty".