1321214342240 has 192 divisors, whose sum is σ = 3746536597440. Its totient is φ = 434971607040.

The previous prime is 1321214342213. The next prime is 1321214342249. The reversal of 1321214342240 is 422434121231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321214342249) by changing a digit.

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, 311441 + ... + 1655120.

It is an arithmetic number, because the mean of its divisors is an integer number (19513211445).

Almost surely, 2^{1321214342240} is an apocalyptic number.

1321214342240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321214342240 is an abundant number, since it is smaller than the sum of its proper divisors (2425322255200).

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

1321214342240 is a wasteful number, since it uses less digits than its factorization.

1321214342240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966625 (or 1966617 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1321214342240 its reverse (422434121231), we get a palindrome (1743648463471).

The spelling of 1321214342240 in words is "one trillion, three hundred twenty-one billion, two hundred fourteen million, three hundred forty-two thousand, two hundred forty".