1321235115000 has 160 divisors (see below), whose sum is σ = 4306997819520. Its totient is φ = 337010608000.

The previous prime is 1321235114981. The next prime is 1321235115007. The reversal of 1321235115000 is 5115321231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321235115007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1569834 + ... + 2259833.

It is an arithmetic number, because the mean of its divisors is an integer number (26918736372).

Almost surely, 2^{1321235115000} is an apocalyptic number.

1321235115000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321235115000 is an abundant number, since it is smaller than the sum of its proper divisors (2985762704520).

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

1321235115000 is a wasteful number, since it uses less digits than its factorization.

1321235115000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829719 (or 3829700 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 1321235115000 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-five million, one hundred fifteen thousand".