4223100421 has 2 divisors, whose sum is σ = 4223100422. Its totient is φ = 4223100420.

The previous prime is 4223100397. The next prime is 4223100433. The reversal of 4223100421 is 1240013224.

4223100421 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 can be written as a sum of positive squares in only one way, i.e., 3250596196 + 972504225 = 57014^2 + 31185^2 .

It is a cyclic number.

It is not a de Polignac number, because 4223100421 - 2⁵ = 4223100389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4223100451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111550210 + 2111550211.

It is an arithmetic number, because the mean of its divisors is an integer number (2111550211).

Almost surely, 2^4223100421 is an apocalyptic number.

It is an amenable number.

4223100421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4223100421 is an equidigital number, since it uses as much as digits as its factorization.

4223100421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4223100421 is about 64985.3862110552. The cubic root of 4223100421 is about 1616.3812458510.

Adding to 4223100421 its reverse (1240013224), we get a palindrome (5463113645).

The spelling of 4223100421 in words is "four billion, two hundred twenty-three million, one hundred thousand, four hundred twenty-one".