4221323123 has 2 divisors, whose sum is σ = 4221323124. Its totient is φ = 4221323122.

The previous prime is 4221323111. The next prime is 4221323131. The reversal of 4221323123 is 3213231224.

4221323123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4221323123 - 2⁸ = 4221322867 is a prime.

It is not a weakly prime, because it can be changed into another prime (4221323153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110661561 + 2110661562.

It is an arithmetic number, because the mean of its divisors is an integer number (2110661562).

Almost surely, 2^4221323123 is an apocalyptic number.

4221323123 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221323123 is an equidigital number, since it uses as much as digits as its factorization.

4221323123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 4221323123 is about 64971.7101745060. The cubic root of 4221323123 is about 1616.1544618954.

Adding to 4221323123 its reverse (3213231224), we get a palindrome (7434554347).

The spelling of 4221323123 in words is "four billion, two hundred twenty-one million, three hundred twenty-three thousand, one hundred twenty-three".