1021001013320 has 32 divisors (see below), whose sum is σ = 2298772768320. Its totient is φ = 408130096320.

The previous prime is 1021001013311. The next prime is 1021001013337. The reversal of 1021001013320 is 233101001201.

It is a junction number, because it is equal to n+sod(n) for n = 1021001013295 and 1021001013304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8385962 + ... + 8506841.

It is an arithmetic number, because the mean of its divisors is an integer number (71836649010).

Almost surely, 2^{1021001013320} is an apocalyptic number.

1021001013320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021001013320 is an abundant number, since it is smaller than the sum of its proper divisors (1277771755000).

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

1021001013320 is a wasteful number, since it uses less digits than its factorization.

1021001013320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16894325 (or 16894321 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1021001013320 its reverse (233101001201), we get a palindrome (1254102014521).

The spelling of 1021001013320 in words is "one trillion, twenty-one billion, one million, thirteen thousand, three hundred twenty".