4101620221 has 2 divisors, whose sum is σ = 4101620222. Its totient is φ = 4101620220.

The previous prime is 4101620219. The next prime is 4101620227. The reversal of 4101620221 is 1220261014.

4101620221 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., 2500500025 + 1601120196 = 50005^2 + 40014^2 .

It is a cyclic number.

It is not a de Polignac number, because 4101620221 - 2¹ = 4101620219 is a prime.

Together with 4101620219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4101620227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2050810110 + 2050810111.

It is an arithmetic number, because the mean of its divisors is an integer number (2050810111).

Almost surely, 2^4101620221 is an apocalyptic number.

It is an amenable number.

4101620221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4101620221 is an equidigital number, since it uses as much as digits as its factorization.

4101620221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 4101620221 is about 64043.8929250869. The cubic root of 4101620221 is about 1600.7314651576.

Adding to 4101620221 its reverse (1220261014), we get a palindrome (5321881235).

The spelling of 4101620221 in words is "four billion, one hundred one million, six hundred twenty thousand, two hundred twenty-one".