11833129121 has 4 divisors (see below), whose sum is σ = 12908868144. Its totient is φ = 10757390100.

The previous prime is 11833129097. The next prime is 11833129151. The reversal of 11833129121 is 12192133811.

It is a happy number.

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 11833129121 - 2²⁶ = 11766020257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11833129151) 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, 537869495 + ... + 537869516.

It is an arithmetic number, because the mean of its divisors is an integer number (3227217036).

Almost surely, 2^11833129121 is an apocalyptic number.

11833129121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11833129121 is a deficient number, since it is larger than the sum of its proper divisors (1075739023).

11833129121 is a wasteful number, since it uses less digits than its factorization.

11833129121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075739022.

The product of its digits is 2592, while the sum is 32.

The spelling of 11833129121 in words is "eleven billion, eight hundred thirty-three million, one hundred twenty-nine thousand, one hundred twenty-one".