123020210232133 has 4 divisors (see below), whose sum is σ = 123020672464620. Its totient is φ = 123019747999648.

The previous prime is 123020210232119. The next prime is 123020210232247. The reversal of 123020210232133 is 331232012020321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66651843027364 + 56368367204769 = 8164058^2 + 7507887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123020210232133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123020210232098 and 123020210232107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020210232113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230716798 + ... + 231249391.

It is an arithmetic number, because the mean of its divisors is an integer number (30755168116155).

Almost surely, 2^{123020210232133} is an apocalyptic number.

It is an amenable number.

123020210232133 is a deficient number, since it is larger than the sum of its proper divisors (462232487).

123020210232133 is an equidigital number, since it uses as much as digits as its factorization.

123020210232133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462232486.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 123020210232133 its reverse (331232012020321), we get a palindrome (454252222252454).

The spelling of 123020210232133 in words is "one hundred twenty-three trillion, twenty billion, two hundred ten million, two hundred thirty-two thousand, one hundred thirty-three".