4012023311321 has 4 divisors (see below), whose sum is σ = 4012596382644. Its totient is φ = 4011450240000.

The previous prime is 4012023311297. The next prime is 4012023311371. The reversal of 4012023311321 is 1231133202104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1997880479296 + 2014142832025 = 1413464^2 + 1419205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4012023311321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4012023311371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286525160 + ... + 286539161.

It is an arithmetic number, because the mean of its divisors is an integer number (1003149095661).

Almost surely, 2^{4012023311321} is an apocalyptic number.

It is an amenable number.

4012023311321 is a deficient number, since it is larger than the sum of its proper divisors (573071323).

4012023311321 is an equidigital number, since it uses as much as digits as its factorization.

4012023311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573071322.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 4012023311321 its reverse (1231133202104), we get a palindrome (5243156513425).

The spelling of 4012023311321 in words is "four trillion, twelve billion, twenty-three million, three hundred eleven thousand, three hundred twenty-one".