1044221355 has 16 divisors (see below), whose sum is σ = 1856393760. Its totient is φ = 556917984.

The previous prime is 1044221351. The next prime is 1044221369. The reversal of 1044221355 is 5531224401.

1044221355 is a `hidden beast` number, since 1 + 0 + 442 + 213 + 5 + 5 = 666.

It is not a de Polignac number, because 1044221355 - 2² = 1044221351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1044221351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3867352 + ... + 3867621.

It is an arithmetic number, because the mean of its divisors is an integer number (116024610).

Almost surely, 2^1044221355 is an apocalyptic number.

1044221355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1044221355 is a deficient number, since it is larger than the sum of its proper divisors (812172405).

1044221355 is an equidigital number, since it uses as much as digits as its factorization.

1044221355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7734987 (or 7734981 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1044221355 is about 32314.4140438907. The cubic root of 1044221355 is about 1014.5283563466.

Adding to 1044221355 its reverse (5531224401), we get a palindrome (6575445756).

The spelling of 1044221355 in words is "one billion, forty-four million, two hundred twenty-one thousand, three hundred fifty-five".