2129133109 has 4 divisors (see below), whose sum is σ = 2136068704. Its totient is φ = 2122197516.

The previous prime is 2129133101. The next prime is 2129133113. The reversal of 2129133109 is 9013319212.

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 2129133109 - 2³ = 2129133101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129133101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3467337 + ... + 3467950.

It is an arithmetic number, because the mean of its divisors is an integer number (534017176).

Almost surely, 2^2129133109 is an apocalyptic number.

It is an amenable number.

2129133109 is a deficient number, since it is larger than the sum of its proper divisors (6935595).

2129133109 is an equidigital number, since it uses as much as digits as its factorization.

2129133109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935594.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 2129133109 is about 46142.5303705811. The cubic root of 2129133109 is about 1286.4737760708.

The spelling of 2129133109 in words is "two billion, one hundred twenty-nine million, one hundred thirty-three thousand, one hundred nine".