1021330240420 has 48 divisors (see below), whose sum is σ = 2580202719360. Its totient is φ = 331740347904.

The previous prime is 1021330240393. The next prime is 1021330240423. The reversal of 1021330240420 is 240420331201.

1021330240420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1021330240391 and 1021330240400.

It is not an unprimeable number, because it can be changed into a prime (1021330240423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191976709 + ... + 191982028.

It is an arithmetic number, because the mean of its divisors is an integer number (53754223320).

Almost surely, 2^{1021330240420} is an apocalyptic number.

1021330240420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021330240420 is an abundant number, since it is smaller than the sum of its proper divisors (1558872478940).

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

1021330240420 is a wasteful number, since it uses less digits than its factorization.

1021330240420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383958772 (or 383958770 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1021330240420 its reverse (240420331201), we get a palindrome (1261750571621).

The spelling of 1021330240420 in words is "one trillion, twenty-one billion, three hundred thirty million, two hundred forty thousand, four hundred twenty".