404101212 has 12 divisors (see below), whose sum is σ = 942902856. Its totient is φ = 134700400.

The previous prime is 404101211. The next prime is 404101219. The reversal of 404101212 is 212101404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 404101191 and 404101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404101211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16837539 + ... + 16837562.

It is an arithmetic number, because the mean of its divisors is an integer number (78575238).

Almost surely, 2^404101212 is an apocalyptic number.

It is an amenable number.

404101212 is an abundant number, since it is smaller than the sum of its proper divisors (538801644).

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

404101212 is a wasteful number, since it uses less digits than its factorization.

404101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33675108 (or 33675106 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 404101212 is about 20102.2688271747. The cubic root of 404101212 is about 739.3159078402.

Adding to 404101212 its reverse (212101404), we get a palindrome (616202616).

The spelling of 404101212 in words is "four hundred four million, one hundred one thousand, two hundred twelve".