11100203405 has 8 divisors (see below), whose sum is σ = 13326420984. Its totient is φ = 8876044800.

The previous prime is 11100203381. The next prime is 11100203407. The reversal of 11100203405 is 50430200111.

It can be written as a sum of positive squares in 4 ways, for example, as 1192389961 + 9907813444 = 34531^2 + 99538^2 .

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

It is not a de Polignac number, because 11100203405 - 2¹⁰ = 11100202381 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 (11100203407) 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, 502856 + ... + 524465.

It is an arithmetic number, because the mean of its divisors is an integer number (1665802623).

Almost surely, 2^11100203405 is an apocalyptic number.

It is an amenable number.

11100203405 is a deficient number, since it is larger than the sum of its proper divisors (2226217579).

11100203405 is a wasteful number, since it uses less digits than its factorization.

11100203405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029487.

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

Adding to 11100203405 its reverse (50430200111), we get a palindrome (61530403516).

The spelling of 11100203405 in words is "eleven billion, one hundred million, two hundred three thousand, four hundred five".