221103303463456 has 12 divisors (see below), whose sum is σ = 435297128693742. Its totient is φ = 110551651731712.

The previous prime is 221103303463429. The next prime is 221103303463541. The reversal of 221103303463456 is 654364303301122.

It can be written as a sum of positive squares in only one way, i.e., 216271730192400 + 4831573271056 = 14706180^2 + 2198084^2 .

It is a super-2 number, since 2×221103303463456² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3454739116585 + ... + 3454739116648.

Almost surely, 2^{221103303463456} is an apocalyptic number.

It is an amenable number.

221103303463456 is a deficient number, since it is larger than the sum of its proper divisors (214193825230286).

221103303463456 is an equidigital number, since it uses as much as digits as its factorization.

221103303463456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909478233243 (or 6909478233235 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 43.

Adding to 221103303463456 its reverse (654364303301122), we get a palindrome (875467606764578).

The spelling of 221103303463456 in words is "two hundred twenty-one trillion, one hundred three billion, three hundred three million, four hundred sixty-three thousand, four hundred fifty-six".