11221321003 has 4 divisors (see below), whose sum is σ = 11247236728. Its totient is φ = 11195405280.

The previous prime is 11221320989. The next prime is 11221321073. The reversal of 11221321003 is 30012312211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11221321003 - 2¹³ = 11221312811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221321073) 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 3 ways as a sum of consecutive naturals, for example, 12957213 + ... + 12958078.

It is an arithmetic number, because the mean of its divisors is an integer number (2811809182).

Almost surely, 2^11221321003 is an apocalyptic number.

11221321003 is a deficient number, since it is larger than the sum of its proper divisors (25915725).

11221321003 is an equidigital number, since it uses as much as digits as its factorization.

11221321003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25915724.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11221321003 its reverse (30012312211), we get a palindrome (41233633214).

The spelling of 11221321003 in words is "eleven billion, two hundred twenty-one million, three hundred twenty-one thousand, three".