4102201421 has 2 divisors, whose sum is σ = 4102201422. Its totient is φ = 4102201420.

The previous prime is 4102201393. The next prime is 4102201451. The reversal of 4102201421 is 1241022014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3229648900 + 872552521 = 56830^2 + 29539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4102201421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4102201421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4102201451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2051100710 + 2051100711.

It is an arithmetic number, because the mean of its divisors is an integer number (2051100711).

Almost surely, 2^4102201421 is an apocalyptic number.

It is an amenable number.

4102201421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4102201421 is an equidigital number, since it uses as much as digits as its factorization.

4102201421 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 4102201421 is about 64048.4302774080. The cubic root of 4102201421 is about 1600.8070695235.

Adding to 4102201421 its reverse (1241022014), we get a palindrome (5343223435).

The spelling of 4102201421 in words is "four billion, one hundred two million, two hundred one thousand, four hundred twenty-one".