1201143312321 has 32 divisors (see below), whose sum is σ = 1637397635328. Its totient is φ = 783028638720.

The previous prime is 1201143312283. The next prime is 1201143312323. The reversal of 1201143312321 is 1232133411021.

It is a de Polignac number, because none of the positive numbers 2^k-1201143312321 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1201143312291 and 1201143312300.

It is not an unprimeable number, because it can be changed into a prime (1201143312323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23887276 + ... + 23937506.

It is an arithmetic number, because the mean of its divisors is an integer number (51168676104).

Almost surely, 2^{1201143312321} is an apocalyptic number.

It is an amenable number.

1201143312321 is a deficient number, since it is larger than the sum of its proper divisors (436254323007).

1201143312321 is a wasteful number, since it uses less digits than its factorization.

1201143312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51241.

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

Adding to 1201143312321 its reverse (1232133411021), we get a palindrome (2433276723342).

The spelling of 1201143312321 in words is "one trillion, two hundred one billion, one hundred forty-three million, three hundred twelve thousand, three hundred twenty-one".