123210020333123 has 4 divisors (see below), whose sum is σ = 123210063734520. Its totient is φ = 123209976931728.

The previous prime is 123210020333119. The next prime is 123210020333173. The reversal of 123210020333123 is 321333020012321.

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

It is a cyclic number.

It is not a de Polignac number, because 123210020333123 - 2² = 123210020333119 is a prime.

It is a super-2 number, since 2×123210020333123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123210020333092 and 123210020333101.

It is not an unprimeable number, because it can be changed into a prime (123210020333173) 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, 17120138 + ... + 23227551.

It is an arithmetic number, because the mean of its divisors is an integer number (30802515933630).

Almost surely, 2^{123210020333123} is an apocalyptic number.

123210020333123 is a deficient number, since it is larger than the sum of its proper divisors (43401397).

123210020333123 is an equidigital number, since it uses as much as digits as its factorization.

123210020333123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43401396.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 123210020333123 its reverse (321333020012321), we get a palindrome (444543040345444).

The spelling of 123210020333123 in words is "one hundred twenty-three trillion, two hundred ten billion, twenty million, three hundred thirty-three thousand, one hundred twenty-three".