11003420611 has 4 divisors (see below), whose sum is σ = 11029557424. Its totient is φ = 10977283800.

The previous prime is 11003420569. The next prime is 11003420621. The reversal of 11003420611 is 11602430011.

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 11003420611 - 2¹³ = 11003412419 is a prime.

It is a super-2 number, since 2×11003420611² (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 (11003420621) 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, 13067775 + ... + 13068616.

It is an arithmetic number, because the mean of its divisors is an integer number (2757389356).

Almost surely, 2^11003420611 is an apocalyptic number.

11003420611 is a deficient number, since it is larger than the sum of its proper divisors (26136813).

11003420611 is an equidigital number, since it uses as much as digits as its factorization.

11003420611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26136812.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11003420611 its reverse (11602430011), we get a palindrome (22605850622).

The spelling of 11003420611 in words is "eleven billion, three million, four hundred twenty thousand, six hundred eleven".