1321131100013 has 4 divisors (see below), whose sum is σ = 1321396020000. Its totient is φ = 1320866180028.

The previous prime is 1321131099979. The next prime is 1321131100021. The reversal of 1321131100013 is 3100011311231.

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 1321131100013 - 2⁶ = 1321131099949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321131099964 and 1321131100000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321131100313) 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, 132452513 + ... + 132462486.

It is an arithmetic number, because the mean of its divisors is an integer number (330349005000).

Almost surely, 2^{1321131100013} is an apocalyptic number.

It is an amenable number.

1321131100013 is a deficient number, since it is larger than the sum of its proper divisors (264919987).

1321131100013 is an equidigital number, since it uses as much as digits as its factorization.

1321131100013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264919986.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1321131100013 its reverse (3100011311231), we get a palindrome (4421142411244).

The spelling of 1321131100013 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-one million, one hundred thousand, thirteen".