4221121020320 has 48 divisors (see below), whose sum is σ = 9972534384288. Its totient is φ = 1688425386240.

The previous prime is 4221121020287. The next prime is 4221121020349. The reversal of 4221121020320 is 230201211224.

4221121020320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 4221121020292 and 4221121020301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16289207 + ... + 16546313.

It is an arithmetic number, because the mean of its divisors is an integer number (207761133006).

Almost surely, 2^{4221121020320} is an apocalyptic number.

4221121020320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4221121020320 is an abundant number, since it is smaller than the sum of its proper divisors (5751413363968).

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

4221121020320 is a wasteful number, since it uses less digits than its factorization.

4221121020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359733 (or 359725 counting only the distinct ones).

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

Adding to 4221121020320 its reverse (230201211224), we get a palindrome (4451322231544).

The spelling of 4221121020320 in words is "four trillion, two hundred twenty-one billion, one hundred twenty-one million, twenty thousand, three hundred twenty".