120343011123 has 4 divisors (see below), whose sum is σ = 160457348168. Its totient is φ = 80228674080.

The previous prime is 120343011097. The next prime is 120343011137. The reversal of 120343011123 is 321110343021.

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

It is not a de Polignac number, because 120343011123 - 2¹³ = 120343002931 is a prime.

It is a super-2 number, since 2×120343011123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120343011123.

It is not an unprimeable number, because it can be changed into a prime (120343011143) 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, 20057168518 + ... + 20057168523.

It is an arithmetic number, because the mean of its divisors is an integer number (40114337042).

Almost surely, 2^120343011123 is an apocalyptic number.

120343011123 is a deficient number, since it is larger than the sum of its proper divisors (40114337045).

120343011123 is an equidigital number, since it uses as much as digits as its factorization.

120343011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40114337044.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 120343011123 its reverse (321110343021), we get a palindrome (441453354144).

The spelling of 120343011123 in words is "one hundred twenty billion, three hundred forty-three million, eleven thousand, one hundred twenty-three".