401021313321 has 32 divisors (see below), whose sum is σ = 557925984000. Its totient is φ = 255901282560.

The previous prime is 401021313311. The next prime is 401021313383. The reversal of 401021313321 is 123313120104.

It is not a de Polignac number, because 401021313321 - 2³⁸ = 126143406377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (401021313311) 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, 4753891 + ... + 4837511.

It is an arithmetic number, because the mean of its divisors is an integer number (17435187000).

Almost surely, 2^401021313321 is an apocalyptic number.

It is an amenable number.

401021313321 is a deficient number, since it is larger than the sum of its proper divisors (156904670679).

401021313321 is a wasteful number, since it uses less digits than its factorization.

401021313321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84129.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 401021313321 its reverse (123313120104), we get a palindrome (524334433425).

The spelling of 401021313321 in words is "four hundred one billion, twenty-one million, three hundred thirteen thousand, three hundred twenty-one".