123121050444353 has 4 divisors (see below), whose sum is σ = 132591900478548. Its totient is φ = 113650200410160.

The previous prime is 123121050444347. The next prime is 123121050444361. The reversal of 123121050444353 is 353444050121321.

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 63278572577089 + 59842477867264 = 7954783^2 + 7735792^2 .

It is a cyclic number.

It is not a de Polignac number, because 123121050444353 - 2²⁰ = 123121049395777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123121050444253) 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, 4735425017078 + ... + 4735425017103.

It is an arithmetic number, because the mean of its divisors is an integer number (33147975119637).

Almost surely, 2^{123121050444353} is an apocalyptic number.

123121050444353 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123121050444353 is a deficient number, since it is larger than the sum of its proper divisors (9470850034195).

123121050444353 is an equidigital number, since it uses as much as digits as its factorization.

123121050444353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9470850034194.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 123121050444353 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, fifty million, four hundred forty-four thousand, three hundred fifty-three".