44421113421 has 32 divisors (see below), whose sum is σ = 67608019200. Its totient is φ = 28805025600.

The previous prime is 44421113383. The next prime is 44421113437. The reversal of 44421113421 is 12431112444.

44421113421 is a `hidden beast` number, since 444 + 211 + 1 + 3 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 44421113421 - 2⁶ = 44421113357 is a prime.

It is a super-2 number, since 2×44421113421² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44421113621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6141235 + ... + 6148463.

It is an arithmetic number, because the mean of its divisors is an integer number (2112750600).

Almost surely, 2^44421113421 is an apocalyptic number.

It is an amenable number.

44421113421 is a deficient number, since it is larger than the sum of its proper divisors (23186905779).

44421113421 is a wasteful number, since it uses less digits than its factorization.

44421113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13426 (or 13420 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 44421113421 its reverse (12431112444), we get a palindrome (56852225865).

The spelling of 44421113421 in words is "forty-four billion, four hundred twenty-one million, one hundred thirteen thousand, four hundred twenty-one".