43215205212 has 120 divisors (see below), whose sum is σ = 113984787840. Its totient is φ = 14276541600.

The previous prime is 43215205199. The next prime is 43215205237. The reversal of 43215205212 is 21250251234.

43215205212 is a `hidden beast` number, since 432 + 1 + 5 + 205 + 21 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30283243 + ... + 30284669.

It is an arithmetic number, because the mean of its divisors is an integer number (949873232).

Almost surely, 2^43215205212 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 43215205212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56992393920).

43215205212 is an abundant number, since it is smaller than the sum of its proper divisors (70769582628).

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

43215205212 is a wasteful number, since it uses less digits than its factorization.

43215205212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213 (or 2202 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 43215205212 its reverse (21250251234), we get a palindrome (64465456446).

The spelling of 43215205212 in words is "forty-three billion, two hundred fifteen million, two hundred five thousand, two hundred twelve".