1321341145500 has 96 divisors (see below), whose sum is σ = 3848043221568. Its totient is φ = 352330368000.

The previous prime is 1321341145493. The next prime is 1321341145519. The reversal of 1321341145500 is 55411431231.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 25956072 + ... + 26006928.

It is an arithmetic number, because the mean of its divisors is an integer number (40083783558).

Almost surely, 2^{1321341145500} is an apocalyptic number.

1321341145500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321341145500 is an abundant number, since it is smaller than the sum of its proper divisors (2526702076068).

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

1321341145500 is a wasteful number, since it uses less digits than its factorization.

1321341145500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68200 (or 68188 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1321341145500 its reverse (55411431231), we get a palindrome (1376752576731).

The spelling of 1321341145500 in words is "one trillion, three hundred twenty-one billion, three hundred forty-one million, one hundred forty-five thousand, five hundred".