1321194814847 has 4 divisors (see below), whose sum is σ = 1321209931536. Its totient is φ = 1321179698160.

The previous prime is 1321194814831. The next prime is 1321194814861. The reversal of 1321194814847 is 7484184911231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1321194814847 - 2⁴ = 1321194814831 is a prime.

It is a super-2 number, since 2×1321194814847² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321194814747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7426478 + ... + 7602299.

It is an arithmetic number, because the mean of its divisors is an integer number (330302482884).

Almost surely, 2^{1321194814847} is an apocalyptic number.

1321194814847 is a deficient number, since it is larger than the sum of its proper divisors (15116689).

1321194814847 is an equidigital number, since it uses as much as digits as its factorization.

1321194814847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15116688.

The product of its digits is 1548288, while the sum is 53.

The spelling of 1321194814847 in words is "one trillion, three hundred twenty-one billion, one hundred ninety-four million, eight hundred fourteen thousand, eight hundred forty-seven".