1321231132135 has 8 divisors (see below), whose sum is σ = 1607808026016. Its totient is φ = 1042097794080.

The previous prime is 1321231132099. The next prime is 1321231132139. The reversal of 1321231132135 is 5312311321231.

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

It is not a de Polignac number, because 1321231132135 - 2³⁹ = 771475318247 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 (1321231132139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1860888564 + ... + 1860889273.

It is an arithmetic number, because the mean of its divisors is an integer number (200976003252).

Almost surely, 2^{1321231132135} is an apocalyptic number.

1321231132135 is a deficient number, since it is larger than the sum of its proper divisors (286576893881).

1321231132135 is an equidigital number, since it uses as much as digits as its factorization.

1321231132135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721777913.

The product of its digits is 3240, while the sum is 28.

Adding to 1321231132135 its reverse (5312311321231), we get a palindrome (6633542453366).

The spelling of 1321231132135 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-one million, one hundred thirty-two thousand, one hundred thirty-five".