872112133 has 4 divisors (see below), whose sum is σ = 885128800. Its totient is φ = 859095468.

The previous prime is 872112113. The next prime is 872112173. The reversal of 872112133 is 331211278.

872112133 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, and also an emirpimes, since its reverse is a distinct semiprime: 331211278 = 2 ⋅165605639.

It is a cyclic number.

It is not a de Polignac number, because 872112133 - 2⁹ = 872111621 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 (872112113) 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, 6508233 + ... + 6508366.

It is an arithmetic number, because the mean of its divisors is an integer number (221282200).

Almost surely, 2^872112133 is an apocalyptic number.

It is an amenable number.

872112133 is a deficient number, since it is larger than the sum of its proper divisors (13016667).

872112133 is a wasteful number, since it uses less digits than its factorization.

872112133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13016666.

The product of its digits is 2016, while the sum is 28.

The square root of 872112133 is about 29531.5447106988. The cubic root of 872112133 is about 955.4121857678.

The spelling of 872112133 in words is "eight hundred seventy-two million, one hundred twelve thousand, one hundred thirty-three".