1321093900000 has 432 divisors, whose sum is σ = 3853794091392. Its totient is φ = 444312960000.

The previous prime is 1321093899959. The next prime is 1321093900019. The reversal of 1321093900000 is 93901231.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 259697457 + ... + 259702543.

It is an arithmetic number, because the mean of its divisors is an integer number (8920819656).

Almost surely, 2^{1321093900000} is an apocalyptic number.

1321093900000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321093900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1926897045696).

1321093900000 is an abundant number, since it is smaller than the sum of its proper divisors (2532700191392).

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

1321093900000 is an frugal number, since it uses more digits than its factorization.

1321093900000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189 (or 5154 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 28.

The spelling of 1321093900000 in words is "one trillion, three hundred twenty-one billion, ninety-three million, nine hundred thousand".