4142102221 has 2 divisors, whose sum is σ = 4142102222. Its totient is φ = 4142102220.

The previous prime is 4142102197. The next prime is 4142102243. The reversal of 4142102221 is 1222012414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2767917321 + 1374184900 = 52611^2 + 37070^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142102221 - 2²³ = 4133713613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4142102521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071051110 + 2071051111.

It is an arithmetic number, because the mean of its divisors is an integer number (2071051111).

Almost surely, 2^4142102221 is an apocalyptic number.

It is an amenable number.

4142102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4142102221 is an equidigital number, since it uses as much as digits as its factorization.

4142102221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4142102221 is about 64359.1657885650. The cubic root of 4142102221 is about 1605.9805114344.

Adding to 4142102221 its reverse (1222012414), we get a palindrome (5364114635).

The spelling of 4142102221 in words is "four billion, one hundred forty-two million, one hundred two thousand, two hundred twenty-one".