4123332121 has 2 divisors, whose sum is σ = 4123332122. Its totient is φ = 4123332120.

The previous prime is 4123332079. The next prime is 4123332173. The reversal of 4123332121 is 1212333214.

4123332121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4112015625 + 11316496 = 64125^2 + 3364^2 .

It is a cyclic number.

It is not a de Polignac number, because 4123332121 - 2¹¹ = 4123330073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4123332092 and 4123332101.

It is not a weakly prime, because it can be changed into another prime (4123332181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061666060 + 2061666061.

It is an arithmetic number, because the mean of its divisors is an integer number (2061666061).

Almost surely, 2^4123332121 is an apocalyptic number.

It is an amenable number.

4123332121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4123332121 is an equidigital number, since it uses as much as digits as its factorization.

4123332121 is an evil number, because the sum of its binary digits is even.

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

The square root of 4123332121 is about 64213.1771601437. The cubic root of 4123332121 is about 1603.5509831658.

Adding to 4123332121 its reverse (1212333214), we get a palindrome (5335665335).

The spelling of 4123332121 in words is "four billion, one hundred twenty-three million, three hundred thirty-two thousand, one hundred twenty-one".