404142214221 has 6 divisors (see below), whose sum is σ = 583760976110. Its totient is φ = 269428142808.

The previous prime is 404142214211. The next prime is 404142214247. The reversal of 404142214221 is 122412241404.

404142214221 is a `hidden beast` number, since 4 + 0 + 4 + 1 + 422 + 14 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 299723400900 + 104418813321 = 547470^2 + 323139^2 .

It is not a de Polignac number, because 404142214221 - 2¹³ = 404142206029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404142214211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22452345226 + ... + 22452345243.

Almost surely, 2^404142214221 is an apocalyptic number.

It is an amenable number.

404142214221 is a deficient number, since it is larger than the sum of its proper divisors (179618761889).

404142214221 is a wasteful number, since it uses less digits than its factorization.

404142214221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44904690475 (or 44904690472 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 404142214221 its reverse (122412241404), we get a palindrome (526554455625).

The spelling of 404142214221 in words is "four hundred four billion, one hundred forty-two million, two hundred fourteen thousand, two hundred twenty-one".