2120303202123 has 4 divisors (see below), whose sum is σ = 2827070936168. Its totient is φ = 1413535468080.

The previous prime is 2120303202079. The next prime is 2120303202161. The reversal of 2120303202123 is 3212023030212.

It is a happy number.

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

It is not a de Polignac number, because 2120303202123 - 2⁸ = 2120303201867 is a prime.

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 2120303202123.

It is not an unprimeable number, because it can be changed into a prime (2120303202023) 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, 353383867018 + ... + 353383867023.

It is an arithmetic number, because the mean of its divisors is an integer number (706767734042).

Almost surely, 2^{2120303202123} is an apocalyptic number.

2120303202123 is a deficient number, since it is larger than the sum of its proper divisors (706767734045).

2120303202123 is an equidigital number, since it uses as much as digits as its factorization.

2120303202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706767734044.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 2120303202123 its reverse (3212023030212), we get a palindrome (5332326232335).

The spelling of 2120303202123 in words is "two trillion, one hundred twenty billion, three hundred three million, two hundred two thousand, one hundred twenty-three".