11775221003 has 32 divisors (see below), whose sum is σ = 15605291520. Its totient is φ = 8619932160.

The previous prime is 11775220997. The next prime is 11775221011. The reversal of 11775221003 is 30012257711.

It is not a de Polignac number, because 11775221003 - 2⁶ = 11775220939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11775221023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26768 + ... + 155778.

It is an arithmetic number, because the mean of its divisors is an integer number (487665360).

Almost surely, 2^11775221003 is an apocalyptic number.

11775221003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11775221003 is a deficient number, since it is larger than the sum of its proper divisors (3830070517).

11775221003 is a wasteful number, since it uses less digits than its factorization.

11775221003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129107.

The product of its (nonzero) digits is 2940, while the sum is 29.

Adding to 11775221003 its reverse (30012257711), we get a palindrome (41787478714).

The spelling of 11775221003 in words is "eleven billion, seven hundred seventy-five million, two hundred twenty-one thousand, three".