1020001104320 has 224 divisors, whose sum is σ = 2807281152000. Its totient is φ = 348875735040.

The previous prime is 1020001104313. The next prime is 1020001104341. The reversal of 1020001104320 is 234011000201.

It is a junction number, because it is equal to n+sod(n) for n = 1020001104295 and 1020001104304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119615897 + ... + 119624423.

Almost surely, 2^{1020001104320} is an apocalyptic number.

1020001104320 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 1020001104320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403640576000).

1020001104320 is an abundant number, since it is smaller than the sum of its proper divisors (1787280047680).

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

1020001104320 is a wasteful number, since it uses less digits than its factorization.

1020001104320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10571 (or 10561 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1020001104320 its reverse (234011000201), we get a palindrome (1254012104521).

The spelling of 1020001104320 in words is "one trillion, twenty billion, one million, one hundred four thousand, three hundred twenty".