1200321313321 has 16 divisors (see below), whose sum is σ = 1322780255104. Its totient is φ = 1082168688384.

The previous prime is 1200321313283. The next prime is 1200321313333. The reversal of 1200321313321 is 1233131230021.

It is a cyclic number.

It is not a de Polignac number, because 1200321313321 - 2⁷ = 1200321313193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200321313292 and 1200321313301.

It is not an unprimeable number, because it can be changed into a prime (1200321313021) 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, 15443860 + ... + 15521386.

It is an arithmetic number, because the mean of its divisors is an integer number (82673765944).

Almost surely, 2^{1200321313321} is an apocalyptic number.

It is an amenable number.

1200321313321 is a deficient number, since it is larger than the sum of its proper divisors (122458941783).

1200321313321 is a wasteful number, since it uses less digits than its factorization.

1200321313321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105280.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1200321313321 its reverse (1233131230021), we get a palindrome (2433452543342).

The spelling of 1200321313321 in words is "one trillion, two hundred billion, three hundred twenty-one million, three hundred thirteen thousand, three hundred twenty-one".