1003221401 has 16 divisors (see below), whose sum is σ = 1236681600. Its totient is φ = 792505728.

The previous prime is 1003221397. The next prime is 1003221403. The reversal of 1003221401 is 1041223001.

It is not a de Polignac number, because 1003221401 - 2² = 1003221397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1003221403) 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, 51605 + ... + 68333.

It is an arithmetic number, because the mean of its divisors is an integer number (77292600).

Almost surely, 2^1003221401 is an apocalyptic number.

It is an amenable number.

1003221401 is a deficient number, since it is larger than the sum of its proper divisors (233460199).

1003221401 is a wasteful number, since it uses less digits than its factorization.

1003221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17408.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1003221401 is about 31673.6704693346. The cubic root of 1003221401 is about 1001.0726493453.

Adding to 1003221401 its reverse (1041223001), we get a palindrome (2044444402).

The spelling of 1003221401 in words is "one billion, three million, two hundred twenty-one thousand, four hundred one".