43212401220 has 192 divisors, whose sum is σ = 126621895680. Its totient is φ = 11003481600.

The previous prime is 43212401213. The next prime is 43212401273. The reversal of 43212401220 is 2210421234.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17921815 + ... + 17924225.

It is an arithmetic number, because the mean of its divisors is an integer number (659489040).

Almost surely, 2^43212401220 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 43212401220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63310947840).

43212401220 is an abundant number, since it is smaller than the sum of its proper divisors (83409494460).

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

43212401220 is a wasteful number, since it uses less digits than its factorization.

43212401220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626 (or 2624 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 43212401220 its reverse (2210421234), we get a palindrome (45422822454).

The spelling of 43212401220 in words is "forty-three billion, two hundred twelve million, four hundred one thousand, two hundred twenty".