1321001131300 has 36 divisors (see below), whose sum is σ = 3035194367940. Its totient is φ = 497318072320.

The previous prime is 1321001131237. The next prime is 1321001131301. The reversal of 1321001131300 is 31311001231.

It can be written as a sum of positive squares in 6 ways, for example, as 41966800164 + 1279034331136 = 204858^2 + 1130944^2 .

It is not an unprimeable number, because it can be changed into a prime (1321001131301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388528045 + ... + 388531444.

It is an arithmetic number, because the mean of its divisors is an integer number (84310954665).

Almost surely, 2^{1321001131300} is an apocalyptic number.

1321001131300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321001131300 is an abundant number, since it is smaller than the sum of its proper divisors (1714193236640).

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

1321001131300 is a wasteful number, since it uses less digits than its factorization.

1321001131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777059520 (or 777059513 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 1321001131300 its reverse (31311001231), we get a palindrome (1352312132531).

The spelling of 1321001131300 in words is "one trillion, three hundred twenty-one billion, one million, one hundred thirty-one thousand, three hundred".