4320552121 has 2 divisors, whose sum is σ = 4320552122. Its totient is φ = 4320552120.

The previous prime is 4320552113. The next prime is 4320552179. The reversal of 4320552121 is 1212550234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4311760896 + 8791225 = 65664^2 + 2965^2 .

It is a cyclic number.

It is not a de Polignac number, because 4320552121 - 2³ = 4320552113 is a prime.

It is not a weakly prime, because it can be changed into another prime (4320552521) 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, 2160276060 + 2160276061.

It is an arithmetic number, because the mean of its divisors is an integer number (2160276061).

Almost surely, 2^4320552121 is an apocalyptic number.

It is an amenable number.

4320552121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4320552121 is an equidigital number, since it uses as much as digits as its factorization.

4320552121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4320552121 is about 65730.9068931808. The cubic root of 4320552121 is about 1628.7199506572.

The spelling of 4320552121 in words is "four billion, three hundred twenty million, five hundred fifty-two thousand, one hundred twenty-one".