11103203231011 has 4 divisors (see below), whose sum is σ = 11104370647024. Its totient is φ = 11102035815000.

The previous prime is 11103203231009. The next prime is 11103203231051. The reversal of 11103203231011 is 11013230230111.

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 11103203231011 - 2¹ = 11103203231009 is a prime.

It is a super-2 number, since 2×11103203231011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11103203231011.

It is not an unprimeable number, because it can be changed into a prime (11103203231051) 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, 583693740 + ... + 583712761.

It is an arithmetic number, because the mean of its divisors is an integer number (2776092661756).

Almost surely, 2^{11103203231011} is an apocalyptic number.

11103203231011 is a deficient number, since it is larger than the sum of its proper divisors (1167416013).

11103203231011 is an equidigital number, since it uses as much as digits as its factorization.

11103203231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167416012.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 11103203231011 its reverse (11013230230111), we get a palindrome (22116433461122).

The spelling of 11103203231011 in words is "eleven trillion, one hundred three billion, two hundred three million, two hundred thirty-one thousand, eleven".