404221110100 has 18 divisors (see below), whose sum is σ = 877159809134. Its totient is φ = 161688444000.

The previous prime is 404221110077. The next prime is 404221110107. The reversal of 404221110100 is 1011122404.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7275748804 + 396945361296 = 85298^2 + 630036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404221110107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2021105451 + ... + 2021105650.

Almost surely, 2^404221110100 is an apocalyptic number.

It is an amenable number.

404221110100 is an abundant number, since it is smaller than the sum of its proper divisors (472938699034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404221110100 is a wasteful number, since it uses less digits than its factorization.

404221110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042211115 (or 4042211108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 404221110100 its reverse (1011122404), we get a palindrome (405232232504).

The spelling of 404221110100 in words is "four hundred four billion, two hundred twenty-one million, one hundred ten thousand, one hundred".