321404441041421 has 16 divisors (see below), whose sum is σ = 341697710304000. Its totient is φ = 301736209578048.

The previous prime is 321404441041417. The next prime is 321404441041427. The reversal of 321404441041421 is 124140144404123.

It is a cyclic number.

It is not a de Polignac number, because 321404441041421 - 2² = 321404441041417 is a prime.

It is a super-3 number, since 3×321404441041421³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321404441041427) 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, 96704021 + ... + 99972378.

It is an arithmetic number, because the mean of its divisors is an integer number (21356106894000).

Almost surely, 2^{321404441041421} is an apocalyptic number.

It is an amenable number.

321404441041421 is a deficient number, since it is larger than the sum of its proper divisors (20293269262579).

321404441041421 is a wasteful number, since it uses less digits than its factorization.

321404441041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196677988.

The product of its (nonzero) digits is 49152, while the sum is 35.

Adding to 321404441041421 its reverse (124140144404123), we get a palindrome (445544585445544).

The spelling of 321404441041421 in words is "three hundred twenty-one trillion, four hundred four billion, four hundred forty-one million, forty-one thousand, four hundred twenty-one".