212424104440 has 64 divisors (see below), whose sum is σ = 479143696320. Its totient is φ = 84758400000.

The previous prime is 212424104369. The next prime is 212424104443. The reversal of 212424104440 is 44401424212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212424104399 and 212424104408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212424104443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64940005 + ... + 64943275.

It is an arithmetic number, because the mean of its divisors is an integer number (7486620255).

Almost surely, 2^212424104440 is an apocalyptic number.

212424104440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212424104440 is an abundant number, since it is smaller than the sum of its proper divisors (266719591880).

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

212424104440 is a wasteful number, since it uses less digits than its factorization.

212424104440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824 (or 6820 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 212424104440 its reverse (44401424212), we get a palindrome (256825528652).

The spelling of 212424104440 in words is "two hundred twelve billion, four hundred twenty-four million, one hundred four thousand, four hundred forty".