221212341404 has 24 divisors (see below), whose sum is σ = 388136609280. Its totient is φ = 110316469104.

The previous prime is 221212341403. The next prime is 221212341479. The reversal of 221212341404 is 404143212122.

221212341404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212341403) 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, 2973647 + ... + 3047129.

It is an arithmetic number, because the mean of its divisors is an integer number (16172358720).

Almost surely, 2^221212341404 is an apocalyptic number.

It is an amenable number.

221212341404 is a deficient number, since it is larger than the sum of its proper divisors (166924267876).

221212341404 is a wasteful number, since it uses less digits than its factorization.

221212341404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75449 (or 75447 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 221212341404 its reverse (404143212122), we get a palindrome (625355553526).

The spelling of 221212341404 in words is "two hundred twenty-one billion, two hundred twelve million, three hundred forty-one thousand, four hundred four".