404221312312 has 16 divisors (see below), whose sum is σ = 758383122600. Its totient is φ = 201985812960.

The previous prime is 404221312307. The next prime is 404221312349. The reversal of 404221312312 is 213213122404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15591639 + ... + 15617542.

Almost surely, 2^404221312312 is an apocalyptic number.

It is an amenable number.

404221312312 is a deficient number, since it is larger than the sum of its proper divisors (354161810288).

404221312312 is a wasteful number, since it uses less digits than its factorization.

404221312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31210806 (or 31210802 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 404221312312 its reverse (213213122404), we get a palindrome (617434434716).

The spelling of 404221312312 in words is "four hundred four billion, two hundred twenty-one million, three hundred twelve thousand, three hundred twelve".