1144121304321 has 16 divisors (see below), whose sum is σ = 1712468699200. Its totient is φ = 754884157824.

The previous prime is 1144121304317. The next prime is 1144121304323. The reversal of 1144121304321 is 1234031214411.

It is a happy number.

1144121304321 is a `hidden beast` number, since 1 + 1 + 441 + 213 + 0 + 4 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 1144121304321 - 2² = 1144121304317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1144121304323) 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, 218424511 + ... + 218429748.

It is an arithmetic number, because the mean of its divisors is an integer number (107029293700).

Almost surely, 2^{1144121304321} is an apocalyptic number.

It is an amenable number.

1144121304321 is a deficient number, since it is larger than the sum of its proper divisors (568347394879).

1144121304321 is an equidigital number, since it uses as much as digits as its factorization.

1144121304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436854365 (or 436854359 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1144121304321 its reverse (1234031214411), we get a palindrome (2378152518732).

The spelling of 1144121304321 in words is "one trillion, one hundred forty-four billion, one hundred twenty-one million, three hundred four thousand, three hundred twenty-one".