221312443340404 has 24 divisors (see below), whose sum is σ = 417219543715968. Its totient is φ = 102112194449760.

The previous prime is 221312443340393. The next prime is 221312443340411. The reversal of 221312443340404 is 404043344213122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666710992 + ... + 667042855.

It is an arithmetic number, because the mean of its divisors is an integer number (17384147654832).

Almost surely, 2^{221312443340404} is an apocalyptic number.

It is an amenable number.

221312443340404 is a deficient number, since it is larger than the sum of its proper divisors (195907100375564).

221312443340404 is a wasteful number, since it uses less digits than its factorization.

221312443340404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333757055 (or 1333757053 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 221312443340404 its reverse (404043344213122), we get a palindrome (625355787553526).

The spelling of 221312443340404 in words is "two hundred twenty-one trillion, three hundred twelve billion, four hundred forty-three million, three hundred forty thousand, four hundred four".