321420441404 has 18 divisors (see below), whose sum is σ = 571858042392. Its totient is φ = 158075619600.

The previous prime is 321420441367. The next prime is 321420441431. The reversal of 321420441404 is 404144024123.

It is a super-2 number, since 2×321420441404² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10782632 + ... + 10812399.

It is an arithmetic number, because the mean of its divisors is an integer number (31769891244).

Almost surely, 2^321420441404 is an apocalyptic number.

It is an amenable number.

321420441404 is a deficient number, since it is larger than the sum of its proper divisors (250437600988).

321420441404 is a wasteful number, since it uses less digits than its factorization.

321420441404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21595157 (or 21595094 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 321420441404 its reverse (404144024123), we get a palindrome (725564465527).

The spelling of 321420441404 in words is "three hundred twenty-one billion, four hundred twenty million, four hundred forty-one thousand, four hundred four".