221223131404 has 12 divisors (see below), whose sum is σ = 422335069128. Its totient is φ = 100555968800.

The previous prime is 221223131369. The next prime is 221223131411. The reversal of 221223131404 is 404131322122.

It is a super-2 number, since 2×221223131404² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513899177 + ... + 2513899264.

It is an arithmetic number, because the mean of its divisors is an integer number (35194589094).

Almost surely, 2^221223131404 is an apocalyptic number.

It is an amenable number.

221223131404 is a deficient number, since it is larger than the sum of its proper divisors (201111937724).

221223131404 is a wasteful number, since it uses less digits than its factorization.

221223131404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027798456 (or 5027798454 counting only the distinct ones).

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

Adding to 221223131404 its reverse (404131322122), we get a palindrome (625354453526).

The spelling of 221223131404 in words is "two hundred twenty-one billion, two hundred twenty-three million, one hundred thirty-one thousand, four hundred four".