11103121230121 has 4 divisors (see below), whose sum is σ = 11373929065044. Its totient is φ = 10832313395200.

The previous prime is 11103121230119. The next prime is 11103121230169. The reversal of 11103121230121 is 12103212130111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1129620362896 + 9973500867225 = 1062836^2 + 3158085^2 .

It is a cyclic number.

It is not a de Polignac number, because 11103121230121 - 2¹ = 11103121230119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103121233121) 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, 135403917400 + ... + 135403917481.

It is an arithmetic number, because the mean of its divisors is an integer number (2843482266261).

Almost surely, 2^{11103121230121} is an apocalyptic number.

It is an amenable number.

11103121230121 is a deficient number, since it is larger than the sum of its proper divisors (270807834923).

11103121230121 is an equidigital number, since it uses as much as digits as its factorization.

11103121230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270807834922.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11103121230121 its reverse (12103212130111), we get a palindrome (23206333360232).

The spelling of 11103121230121 in words is "eleven trillion, one hundred three billion, one hundred twenty-one million, two hundred thirty thousand, one hundred twenty-one".