11220020203 has 4 divisors (see below), whose sum is σ = 12822880240. Its totient is φ = 9617160168.

The previous prime is 11220020197. The next prime is 11220020219. The reversal of 11220020203 is 30202002211.

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

It is a de Polignac number, because none of the positive numbers 2^k-11220020203 is a prime.

It is a super-2 number, since 2×11220020203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220020243) 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, 801430008 + ... + 801430021.

It is an arithmetic number, because the mean of its divisors is an integer number (3205720060).

Almost surely, 2^11220020203 is an apocalyptic number.

11220020203 is a deficient number, since it is larger than the sum of its proper divisors (1602860037).

11220020203 is an equidigital number, since it uses as much as digits as its factorization.

11220020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602860036.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 11220020203 its reverse (30202002211), we get a palindrome (41422022414).

The spelling of 11220020203 in words is "eleven billion, two hundred twenty million, twenty thousand, two hundred three".