212413444440 has 32 divisors (see below), whose sum is σ = 637240333680. Its totient is φ = 56643585152.

The previous prime is 212413444421. The next prime is 212413444447. The reversal of 212413444440 is 44444314212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212413444447) 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, 885055899 + ... + 885056138.

Almost surely, 2^212413444440 is an apocalyptic number.

212413444440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212413444440 is an abundant number, since it is smaller than the sum of its proper divisors (424826889240).

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

212413444440 is a wasteful number, since it uses less digits than its factorization.

212413444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770112051 (or 1770112047 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 212413444440 its reverse (44444314212), we get a palindrome (256857758652).

The spelling of 212413444440 in words is "two hundred twelve billion, four hundred thirteen million, four hundred forty-four thousand, four hundred forty".