444021321123 has 24 divisors (see below), whose sum is σ = 684368377680. Its totient is φ = 276592942080.

The previous prime is 444021321119. The next prime is 444021321193. The reversal of 444021321123 is 321123120444.

444021321123 is a `hidden beast` number, since 4 + 4 + 402 + 132 + 1 + 123 = 666.

It is not a de Polignac number, because 444021321123 - 2² = 444021321119 is a prime.

It is a super-2 number, since 2×444021321123² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (444021321193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17772558 + ... + 17797523.

It is an arithmetic number, because the mean of its divisors is an integer number (28515349070).

Almost surely, 2^444021321123 is an apocalyptic number.

444021321123 is a deficient number, since it is larger than the sum of its proper divisors (240347056557).

444021321123 is a wasteful number, since it uses less digits than its factorization.

444021321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35570179 (or 35570176 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 444021321123 its reverse (321123120444), we get a palindrome (765144441567).

The spelling of 444021321123 in words is "four hundred forty-four billion, twenty-one million, three hundred twenty-one thousand, one hundred twenty-three".