1204200312321 has 16 divisors (see below), whose sum is σ = 1621234423808. Its totient is φ = 795006576000.

The previous prime is 1204200312317. The next prime is 1204200312373. The reversal of 1204200312321 is 1232130024021.

It is not a de Polignac number, because 1204200312321 - 2² = 1204200312317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206200312321) 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, 2714980 + ... + 3127221.

It is an arithmetic number, because the mean of its divisors is an integer number (101327151488).

Almost surely, 2^{1204200312321} is an apocalyptic number.

It is an amenable number.

1204200312321 is a deficient number, since it is larger than the sum of its proper divisors (417034111487).

1204200312321 is a wasteful number, since it uses less digits than its factorization.

1204200312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842872.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1204200312321 its reverse (1232130024021), we get a palindrome (2436330336342).

The spelling of 1204200312321 in words is "one trillion, two hundred four billion, two hundred million, three hundred twelve thousand, three hundred twenty-one".