421440441114321 has 48 divisors (see below), whose sum is σ = 614706584926720. Its totient is φ = 278213038709760.

The previous prime is 421440441114271. The next prime is 421440441114353. The reversal of 421440441114321 is 123411144044124.

421440441114321 is a `hidden beast` number, since 4 + 2 + 1 + 440 + 44 + 11 + 143 + 21 = 666.

It is not a de Polignac number, because 421440441114321 - 2¹⁸ = 421440440852177 is a prime.

It is a super-2 number, since 2×421440441114321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421440441114221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25670969505 + ... + 25670985921.

Almost surely, 2^{421440441114321} is an apocalyptic number.

It is an amenable number.

421440441114321 is a deficient number, since it is larger than the sum of its proper divisors (193266143812399).

421440441114321 is a wasteful number, since it uses less digits than its factorization.

421440441114321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30886 (or 30883 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

Adding to 421440441114321 its reverse (123411144044124), we get a palindrome (544851585158445).

The spelling of 421440441114321 in words is "four hundred twenty-one trillion, four hundred forty billion, four hundred forty-one million, one hundred fourteen thousand, three hundred twenty-one".