4211002421 has 2 divisors, whose sum is σ = 4211002422. Its totient is φ = 4211002420.

The previous prime is 4211002417. The next prime is 4211002429. The reversal of 4211002421 is 1242001124.

4211002421 is digitally balanced in base 3, 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., 2921402500 + 1289599921 = 54050^2 + 35911^2 .

It is a cyclic number.

It is not a de Polignac number, because 4211002421 - 2² = 4211002417 is a prime.

It is a super-2 number, since 2×4211002421² = 35465082779335722482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4211002421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4211002429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105501210 + 2105501211.

It is an arithmetic number, because the mean of its divisors is an integer number (2105501211).

Almost surely, 2^4211002421 is an apocalyptic number.

It is an amenable number.

4211002421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4211002421 is an equidigital number, since it uses as much as digits as its factorization.

4211002421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 4211002421 is about 64892.2369856364. The cubic root of 4211002421 is about 1614.8362764118.

Adding to 4211002421 its reverse (1242001124), we get a palindrome (5453003545).

The spelling of 4211002421 in words is "four billion, two hundred eleven million, two thousand, four hundred twenty-one".