11003100121 has 4 divisors (see below), whose sum is σ = 11849492452. Its totient is φ = 10156707792.

The previous prime is 11003100113. The next prime is 11003100137. The reversal of 11003100121 is 12100130011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12100130011 = 1013 ⋅11944847.

It can be written as a sum of positive squares in 2 ways, for example, as 6928065225 + 4075034896 = 83235^2 + 63836^2 .

It is a cyclic number.

It is not a de Polignac number, because 11003100121 - 2³ = 11003100113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11003100098 and 11003100107.

It is not an unprimeable number, because it can be changed into a prime (11003100191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423196146 + ... + 423196171.

It is an arithmetic number, because the mean of its divisors is an integer number (2962373113).

Almost surely, 2^11003100121 is an apocalyptic number.

It is an amenable number.

11003100121 is a deficient number, since it is larger than the sum of its proper divisors (846392331).

11003100121 is an equidigital number, since it uses as much as digits as its factorization.

11003100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846392330.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 11003100121 its reverse (12100130011), we get a palindrome (23103230132).

The spelling of 11003100121 in words is "eleven billion, three million, one hundred thousand, one hundred twenty-one".