11131415121 has 4 divisors (see below), whose sum is σ = 14841886832. Its totient is φ = 7420943412.

The previous prime is 11131415083. The next prime is 11131415123. The reversal of 11131415121 is 12151413111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11131415121 - 2²⁹ = 10594544209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131415123) 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, 1855235851 + ... + 1855235856.

It is an arithmetic number, because the mean of its divisors is an integer number (3710471708).

Almost surely, 2^11131415121 is an apocalyptic number.

It is an amenable number.

11131415121 is a deficient number, since it is larger than the sum of its proper divisors (3710471711).

11131415121 is an equidigital number, since it uses as much as digits as its factorization.

11131415121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710471710.

The product of its digits is 120, while the sum is 21.

Adding to 11131415121 its reverse (12151413111), we get a palindrome (23282828232).

The spelling of 11131415121 in words is "eleven billion, one hundred thirty-one million, four hundred fifteen thousand, one hundred twenty-one".