11331033121 has 4 divisors (see below), whose sum is σ = 11474464000. Its totient is φ = 11187602244.

The previous prime is 11331033113. The next prime is 11331033139. The reversal of 11331033121 is 12133013311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12133013311 = 10181 ⋅1191731.

It is a cyclic number.

It is not a de Polignac number, because 11331033121 - 2³ = 11331033113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331033521) 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, 71715321 + ... + 71715478.

It is an arithmetic number, because the mean of its divisors is an integer number (2868616000).

Almost surely, 2^11331033121 is an apocalyptic number.

It is an amenable number.

11331033121 is a deficient number, since it is larger than the sum of its proper divisors (143430879).

11331033121 is an equidigital number, since it uses as much as digits as its factorization.

11331033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143430878.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11331033121 its reverse (12133013311), we get a palindrome (23464046432).

The spelling of 11331033121 in words is "eleven billion, three hundred thirty-one million, thirty-three thousand, one hundred twenty-one".