321104140421 has 4 divisors (see below), whose sum is σ = 322353573132. Its totient is φ = 319854707712.

The previous prime is 321104140403. The next prime is 321104140429. The reversal of 321104140421 is 124041401123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124041401123 = 367 ⋅337987469.

It can be written as a sum of positive squares in 2 ways, for example, as 176472247396 + 144631893025 = 420086^2 + 380305^2 .

It is a cyclic number.

It is not a de Polignac number, because 321104140421 - 2²² = 321099946117 is a prime.

It is a super-3 number, since 3×321104140421³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321104140429) 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, 624715970 + ... + 624716483.

It is an arithmetic number, because the mean of its divisors is an integer number (80588393283).

Almost surely, 2^321104140421 is an apocalyptic number.

It is an amenable number.

321104140421 is a deficient number, since it is larger than the sum of its proper divisors (1249432711).

321104140421 is a wasteful number, since it uses less digits than its factorization.

321104140421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249432710.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 321104140421 its reverse (124041401123), we get a palindrome (445145541544).

The spelling of 321104140421 in words is "three hundred twenty-one billion, one hundred four million, one hundred forty thousand, four hundred twenty-one".