1212304404 has 24 divisors (see below), whose sum is σ = 2882083680. Its totient is φ = 396476704.

The previous prime is 1212304399. The next prime is 1212304409. The reversal of 1212304404 is 4044032121.

It is an interprime number because it is at equal distance from previous prime (1212304399) and next prime (1212304409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212304409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952434 + ... + 953705.

It is an arithmetic number, because the mean of its divisors is an integer number (120086820).

Almost surely, 2^1212304404 is an apocalyptic number.

It is an amenable number.

1212304404 is an abundant number, since it is smaller than the sum of its proper divisors (1669779276).

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

1212304404 is a wasteful number, since it uses less digits than its factorization.

1212304404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906199 (or 1906197 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1212304404 is about 34818.1619848033. The cubic root of 1212304404 is about 1066.2782755680.

Adding to 1212304404 its reverse (4044032121), we get a palindrome (5256336525).

The spelling of 1212304404 in words is "one billion, two hundred twelve million, three hundred four thousand, four hundred four".