1004043221120 has 128 divisors (see below), whose sum is σ = 2425197075840. Its totient is φ = 397460783104.

The previous prime is 1004043221117. The next prime is 1004043221147. The reversal of 1004043221120 is 211223404001.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1004043221092 and 1004043221101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49384397 + ... + 49404723.

It is an arithmetic number, because the mean of its divisors is an integer number (18946852155).

Almost surely, 2^{1004043221120} is an apocalyptic number.

1004043221120 is a gapful number since it is divisible by the number (10) 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 1004043221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212598537920).

1004043221120 is an abundant number, since it is smaller than the sum of its proper divisors (1421153854720).

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

1004043221120 is a wasteful number, since it uses less digits than its factorization.

1004043221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21142 (or 21130 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1004043221120 its reverse (211223404001), we get a palindrome (1215266625121).

The spelling of 1004043221120 in words is "one trillion, four billion, forty-three million, two hundred twenty-one thousand, one hundred twenty".