4211431421 has 2 divisors, whose sum is σ = 4211431422. Its totient is φ = 4211431420.

The previous prime is 4211431409. The next prime is 4211431423. The reversal of 4211431421 is 1241341124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2974502521 + 1236928900 = 54539^2 + 35170^2 .

It is a cyclic number.

It is not a de Polignac number, because 4211431421 - 2¹⁰ = 4211430397 is a prime.

It is a super-2 number, since 2×4211431421² = 35472309227572158482, which contains 22 as substring.

Together with 4211431423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4211431423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105715710 + 2105715711.

It is an arithmetic number, because the mean of its divisors is an integer number (2105715711).

Almost surely, 2^4211431421 is an apocalyptic number.

It is an amenable number.

4211431421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4211431421 is an equidigital number, since it uses as much as digits as its factorization.

4211431421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

The square root of 4211431421 is about 64895.5423815843. The cubic root of 4211431421 is about 1614.8911122259.

Adding to 4211431421 its reverse (1241341124), we get a palindrome (5452772545).

The spelling of 4211431421 in words is "four billion, two hundred eleven million, four hundred thirty-one thousand, four hundred twenty-one".