43001022120 has 192 divisors, whose sum is σ = 152897310720. Its totient is φ = 9643286016.

The previous prime is 43001022083. The next prime is 43001022121. The reversal of 43001022120 is 2122010034.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 43001022120.

It is not an unprimeable number, because it can be changed into a prime (43001022121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242649 + ... + 380631.

It is an arithmetic number, because the mean of its divisors is an integer number (796340160).

Almost surely, 2^43001022120 is an apocalyptic number.

43001022120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43001022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76448655360).

43001022120 is an abundant number, since it is smaller than the sum of its proper divisors (109896288600).

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

43001022120 is a wasteful number, since it uses less digits than its factorization.

43001022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138064 (or 138053 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 43001022120 its reverse (2122010034), we get a palindrome (45123032154).

The spelling of 43001022120 in words is "forty-three billion, one million, twenty-two thousand, one hundred twenty".