1021104020320 has 96 divisors (see below), whose sum is σ = 2442332541600. Its totient is φ = 403377401856.

The previous prime is 1021104020281. The next prime is 1021104020327. The reversal of 1021104020320 is 230204011201.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1021104020294 and 1021104020303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021104020327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12190422 + ... + 12273898.

It is an arithmetic number, because the mean of its divisors is an integer number (25440963975).

Almost surely, 2^{1021104020320} is an apocalyptic number.

1021104020320 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 1021104020320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1221166270800).

1021104020320 is an abundant number, since it is smaller than the sum of its proper divisors (1421228521280).

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

1021104020320 is an equidigital number, since it uses as much as digits as its factorization.

1021104020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84440 (or 84432 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1021104020320 its reverse (230204011201), we get a palindrome (1251308031521).

The spelling of 1021104020320 in words is "one trillion, twenty-one billion, one hundred four million, twenty thousand, three hundred twenty".