2023123121 has 2 divisors, whose sum is σ = 2023123122. Its totient is φ = 2023123120.

The previous prime is 2023123117. The next prime is 2023123127. The reversal of 2023123121 is 1213213202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1346082721 + 677040400 = 36689^2 + 26020^2 .

It is a cyclic number.

It is not a de Polignac number, because 2023123121 - 2² = 2023123117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2023123121.

It is not a weakly prime, because it can be changed into another prime (2023123127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011561560 + 1011561561.

It is an arithmetic number, because the mean of its divisors is an integer number (1011561561).

Almost surely, 2^2023123121 is an apocalyptic number.

It is an amenable number.

2023123121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023123121 is an equidigital number, since it uses as much as digits as its factorization.

2023123121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2023123121 is about 44979.1409544469. The cubic root of 2023123121 is about 1264.7580077339.

Adding to 2023123121 its reverse (1213213202), we get a palindrome (3236336323).

The spelling of 2023123121 in words is "two billion, twenty-three million, one hundred twenty-three thousand, one hundred twenty-one".