404212212404 has 48 divisors (see below), whose sum is σ = 949757375616. Its totient is φ = 145371024000.

The previous prime is 404212212367. The next prime is 404212212427.

It is a happy number.

404212212404 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×404212212404² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50472047 + ... + 50480054.

It is an arithmetic number, because the mean of its divisors is an integer number (19786611992).

Almost surely, 2^404212212404 is an apocalyptic number.

404212212404 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

404212212404 is an abundant number, since it is smaller than the sum of its proper divisors (545545163212).

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

404212212404 is a wasteful number, since it uses less digits than its factorization.

404212212404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100952136 (or 100952134 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

It can be divided in two parts, 404212 and 212404, that added together give a palindrome (616616).

The spelling of 404212212404 in words is "four hundred four billion, two hundred twelve million, two hundred twelve thousand, four hundred four".