1321423101321 has 8 divisors (see below), whose sum is σ = 1764515446560. Its totient is φ = 879639745152.

The previous prime is 1321423101269. The next prime is 1321423101329. The reversal of 1321423101321 is 1231013241231.

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

It is not a de Polignac number, because 1321423101321 - 2¹³ = 1321423093129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321423101291 and 1321423101300.

It is not an unprimeable number, because it can be changed into a prime (1321423101329) 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, 327244911 + ... + 327248948.

It is an arithmetic number, because the mean of its divisors is an integer number (220564430820).

Almost surely, 2^{1321423101321} is an apocalyptic number.

It is an amenable number.

1321423101321 is a deficient number, since it is larger than the sum of its proper divisors (443092345239).

1321423101321 is an equidigital number, since it uses as much as digits as its factorization.

1321423101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654494535.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1321423101321 its reverse (1231013241231), we get a palindrome (2552436342552).

The spelling of 1321423101321 in words is "one trillion, three hundred twenty-one billion, four hundred twenty-three million, one hundred one thousand, three hundred twenty-one".