11201220503 has 8 divisors (see below), whose sum is σ = 12221821200. Its totient is φ = 10181004480.

The previous prime is 11201220469. The next prime is 11201220539. The reversal of 11201220503 is 30502210211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11201220503 - 2¹⁸ = 11200958359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201220553) 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 7 ways as a sum of consecutive naturals, for example, 33500 + ... + 153377.

It is an arithmetic number, because the mean of its divisors is an integer number (1527727650).

Almost surely, 2^11201220503 is an apocalyptic number.

11201220503 is a deficient number, since it is larger than the sum of its proper divisors (1020600697).

11201220503 is a wasteful number, since it uses less digits than its factorization.

11201220503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192337.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 11201220503 its reverse (30502210211), we get a palindrome (41703430714).

The spelling of 11201220503 in words is "eleven billion, two hundred one million, two hundred twenty thousand, five hundred three".