404212211424 has 72 divisors (see below), whose sum is σ = 1313689693680. Its totient is φ = 115489202688.

The previous prime is 404212211411. The next prime is 404212211479. The reversal of 404212211424 is 424112212404.

404212211424 is a `hidden beast` number, since 4 + 0 + 4 + 21 + 2 + 211 + 424 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×404212211424² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100249029 + ... + 100253060.

It is an arithmetic number, because the mean of its divisors is an integer number (18245690190).

Almost surely, 2^404212211424 is an apocalyptic number.

It is an amenable number.

404212211424 is an abundant number, since it is smaller than the sum of its proper divisors (909477482256).

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

404212211424 is a wasteful number, since it uses less digits than its factorization.

404212211424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200502112 (or 200502101 counting only the distinct ones).

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

Adding to 404212211424 its reverse (424112212404), we get a palindrome (828324423828).

The spelling of 404212211424 in words is "four hundred four billion, two hundred twelve million, two hundred eleven thousand, four hundred twenty-four".