1321322120331 has 8 divisors (see below), whose sum is σ = 1779206023824. Its totient is φ = 872159815200.

The previous prime is 1321322120303. The next prime is 1321322120357. The reversal of 1321322120331 is 1330212231231.

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

It is not a de Polignac number, because 1321322120331 - 2⁷ = 1321322120203 is a prime.

It is a super-2 number, since 2×1321322120331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321322120381) 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, 2180399236 + ... + 2180399841.

It is an arithmetic number, because the mean of its divisors is an integer number (222400752978).

Almost surely, 2^{1321322120331} is an apocalyptic number.

1321322120331 is a deficient number, since it is larger than the sum of its proper divisors (457883903493).

1321322120331 is a wasteful number, since it uses less digits than its factorization.

1321322120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360799181.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1321322120331 its reverse (1330212231231), we get a palindrome (2651534351562).

The spelling of 1321322120331 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-two million, one hundred twenty thousand, three hundred thirty-one".