1321100340999 has 8 divisors (see below), whose sum is σ = 1761484348272. Its totient is φ = 880724947200.

The previous prime is 1321100340997. The next prime is 1321100341069. The reversal of 1321100340999 is 9990430011231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321100340999 - 2¹ = 1321100340997 is a prime.

It is a super-2 number, since 2×1321100340999² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321100340999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321100340997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1786564 + ... + 2415369.

It is an arithmetic number, because the mean of its divisors is an integer number (220185543534).

Almost surely, 2^{1321100340999} is an apocalyptic number.

1321100340999 is a deficient number, since it is larger than the sum of its proper divisors (440384007273).

1321100340999 is a wasteful number, since it uses less digits than its factorization.

1321100340999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306737.

The product of its (nonzero) digits is 52488, while the sum is 42.

The spelling of 1321100340999 in words is "one trillion, three hundred twenty-one billion, one hundred million, three hundred forty thousand, nine hundred ninety-nine".