1055321021320 has 16 divisors (see below), whose sum is σ = 2374472298060. Its totient is φ = 422128408512.

The previous prime is 1055321021239. The next prime is 1055321021327. The reversal of 1055321021320 is 231201235501.

1055321021320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 894685190884 + 160635830436 = 945878^2 + 400794^2 .

It is a super-2 number, since 2×1055321021320² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055321021327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13191512727 + ... + 13191512806.

Almost surely, 2^{1055321021320} is an apocalyptic number.

1055321021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055321021320 is an abundant number, since it is smaller than the sum of its proper divisors (1319151276740).

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

1055321021320 is a wasteful number, since it uses less digits than its factorization.

1055321021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26383025544 (or 26383025540 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 1055321021320 its reverse (231201235501), we get a palindrome (1286522256821).

The spelling of 1055321021320 in words is "one trillion, fifty-five billion, three hundred twenty-one million, twenty-one thousand, three hundred twenty".