1321200368117 has 4 divisors (see below), whose sum is σ = 1509943277856. Its totient is φ = 1132457458380.

The previous prime is 1321200368113. The next prime is 1321200368171. The reversal of 1321200368117 is 7118630021231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321200368117 - 2² = 1321200368113 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 (1321200368113) 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, 94371454859 + ... + 94371454872.

It is an arithmetic number, because the mean of its divisors is an integer number (377485819464).

Almost surely, 2^{1321200368117} is an apocalyptic number.

It is an amenable number.

1321200368117 is a deficient number, since it is larger than the sum of its proper divisors (188742909739).

1321200368117 is an equidigital number, since it uses as much as digits as its factorization.

1321200368117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188742909738.

The product of its (nonzero) digits is 12096, while the sum is 35.

Adding to 1321200368117 its reverse (7118630021231), we get a palindrome (8439830389348).

The spelling of 1321200368117 in words is "one trillion, three hundred twenty-one billion, two hundred million, three hundred sixty-eight thousand, one hundred seventeen".