1321313212109 has 8 divisors (see below), whose sum is σ = 1441447587840. Its totient is φ = 1201181335200.

The previous prime is 1321313212099. The next prime is 1321313212129. The reversal of 1321313212109 is 9012123131231.

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

It is not a de Polignac number, because 1321313212109 - 2⁸ = 1321313211853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321313212129) 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, 582329 + ... + 1726769.

It is an arithmetic number, because the mean of its divisors is an integer number (180180948480).

Almost surely, 2^{1321313212109} is an apocalyptic number.

It is an amenable number.

1321313212109 is a deficient number, since it is larger than the sum of its proper divisors (120134375731).

1321313212109 is a wasteful number, since it uses less digits than its factorization.

1321313212109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249411.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 1321313212109 in words is "one trillion, three hundred twenty-one billion, three hundred thirteen million, two hundred twelve thousand, one hundred nine".