404416142221 has 16 divisors (see below), whose sum is σ = 499539881344. Its totient is φ = 318822433344.

The previous prime is 404416142171. The next prime is 404416142243. The reversal of 404416142221 is 122241614404.

It is a cyclic number.

It is not a de Polignac number, because 404416142221 - 2²¹ = 404414045069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404416142021) 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 15 ways as a sum of consecutive naturals, for example, 7996695 + ... + 8047108.

It is an arithmetic number, because the mean of its divisors is an integer number (31221242584).

Almost surely, 2^404416142221 is an apocalyptic number.

It is an amenable number.

404416142221 is a deficient number, since it is larger than the sum of its proper divisors (95123739123).

404416142221 is a wasteful number, since it uses less digits than its factorization.

404416142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16044100.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 404416142221 its reverse (122241614404), we get a palindrome (526657756625).

The spelling of 404416142221 in words is "four hundred four billion, four hundred sixteen million, one hundred forty-two thousand, two hundred twenty-one".