2120231032123 has 4 divisors (see below), whose sum is σ = 2171943984168. Its totient is φ = 2068518080080.

The previous prime is 2120231032067. The next prime is 2120231032159. The reversal of 2120231032123 is 3212301320212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120231032123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120231032094 and 2120231032103.

It is not an unprimeable number, because it can be changed into a prime (2120231032163) 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, 25856475961 + ... + 25856476042.

It is an arithmetic number, because the mean of its divisors is an integer number (542985996042).

Almost surely, 2^{2120231032123} is an apocalyptic number.

2120231032123 is a deficient number, since it is larger than the sum of its proper divisors (51712952045).

2120231032123 is an equidigital number, since it uses as much as digits as its factorization.

2120231032123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51712952044.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2120231032123 its reverse (3212301320212), we get a palindrome (5332532352335).

The spelling of 2120231032123 in words is "two trillion, one hundred twenty billion, two hundred thirty-one million, thirty-two thousand, one hundred twenty-three".