4455210121 has 2 divisors, whose sum is σ = 4455210122. Its totient is φ = 4455210120.

The previous prime is 4455210119. The next prime is 4455210139. The reversal of 4455210121 is 1210125544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4146716025 + 308494096 = 64395^2 + 17564^2 .

It is a cyclic number.

It is not a de Polignac number, because 4455210121 - 2¹ = 4455210119 is a prime.

Together with 4455210119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4455210161) 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, 2227605060 + 2227605061.

It is an arithmetic number, because the mean of its divisors is an integer number (2227605061).

Almost surely, 2^4455210121 is an apocalyptic number.

It is an amenable number.

4455210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4455210121 is an equidigital number, since it uses as much as digits as its factorization.

4455210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 4455210121 is about 66747.3604047381. The cubic root of 4455210121 is about 1645.4678345271.

Adding to 4455210121 its reverse (1210125544), we get a palindrome (5665335665).

The spelling of 4455210121 in words is "four billion, four hundred fifty-five million, two hundred ten thousand, one hundred twenty-one".