1320400422321 has 16 divisors (see below), whose sum is σ = 1769457768960. Its totient is φ = 875809607040.

The previous prime is 1320400422317. The next prime is 1320400422323. The reversal of 1320400422321 is 1232240040231.

It is a happy number.

It is not a de Polignac number, because 1320400422321 - 2² = 1320400422317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320400422291 and 1320400422300.

It is not an unprimeable number, because it can be changed into a prime (1320400422323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577935 + ... + 1724763.

It is an arithmetic number, because the mean of its divisors is an integer number (110591110560).

Almost surely, 2^{1320400422321} is an apocalyptic number.

It is an amenable number.

1320400422321 is a deficient number, since it is larger than the sum of its proper divisors (449057346639).

1320400422321 is a wasteful number, since it uses less digits than its factorization.

1320400422321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148776.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1320400422321 its reverse (1232240040231), we get a palindrome (2552640462552).

The spelling of 1320400422321 in words is "one trillion, three hundred twenty billion, four hundred million, four hundred twenty-two thousand, three hundred twenty-one".