2120123121303 has 16 divisors (see below), whose sum is σ = 3246121526400. Its totient is φ = 1217295571680.

The previous prime is 2120123121287. The next prime is 2120123121317. The reversal of 2120123121303 is 3031213210212.

It is not a de Polignac number, because 2120123121303 - 2⁴ = 2120123121287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2120123121303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120123121383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1690687668 + ... + 1690688921.

It is an arithmetic number, because the mean of its divisors is an integer number (202882595400).

Almost surely, 2^{2120123121303} is an apocalyptic number.

2120123121303 is a deficient number, since it is larger than the sum of its proper divisors (1125998405097).

2120123121303 is a wasteful number, since it uses less digits than its factorization.

2120123121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381376622.

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

Adding to 2120123121303 its reverse (3031213210212), we get a palindrome (5151336331515).

The spelling of 2120123121303 in words is "two trillion, one hundred twenty billion, one hundred twenty-three million, one hundred twenty-one thousand, three hundred three".