11311231606121 has 4 divisors (see below), whose sum is σ = 11803024284672. Its totient is φ = 10819438927572.

The previous prime is 11311231606093. The next prime is 11311231606141. The reversal of 11311231606121 is 12160613211311.

11311231606121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 11311231606121 - 2¹⁸ = 11311231343977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311231606141) 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, 245896339241 + ... + 245896339286.

It is an arithmetic number, because the mean of its divisors is an integer number (2950756071168).

Almost surely, 2^{11311231606121} is an apocalyptic number.

It is an amenable number.

11311231606121 is a deficient number, since it is larger than the sum of its proper divisors (491792678551).

11311231606121 is an equidigital number, since it uses as much as digits as its factorization.

11311231606121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491792678550.

The product of its (nonzero) digits is 1296, while the sum is 29.

Adding to 11311231606121 its reverse (12160613211311), we get a palindrome (23471844817432).

The spelling of 11311231606121 in words is "eleven trillion, three hundred eleven billion, two hundred thirty-one million, six hundred six thousand, one hundred twenty-one".