11221220003 has 4 divisors (see below), whose sum is σ = 12824251440. Its totient is φ = 9618188568.

The previous prime is 11221219987. The next prime is 11221220011. The reversal of 11221220003 is 30002212211.

It is a happy number.

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 11221220003 - 2⁴ = 11221219987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11221220003.

It is not an unprimeable number, because it can be changed into a prime (11221220053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801515708 + ... + 801515721.

It is an arithmetic number, because the mean of its divisors is an integer number (3206062860).

Almost surely, 2^11221220003 is an apocalyptic number.

11221220003 is a deficient number, since it is larger than the sum of its proper divisors (1603031437).

11221220003 is an equidigital number, since it uses as much as digits as its factorization.

11221220003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603031436.

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

Adding to 11221220003 its reverse (30002212211), we get a palindrome (41223432214).

The spelling of 11221220003 in words is "eleven billion, two hundred twenty-one million, two hundred twenty thousand, three".