120020444521 has 2 divisors, whose sum is σ = 120020444522. Its totient is φ = 120020444520.

The previous prime is 120020444497. The next prime is 120020444539. The reversal of 120020444521 is 125444020021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116734288896 + 3286155625 = 341664^2 + 57325^2 .

It is a cyclic number.

It is not a de Polignac number, because 120020444521 - 2⁹ = 120020444009 is a prime.

It is not a weakly prime, because it can be changed into another prime (120020444561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010222260 + 60010222261.

It is an arithmetic number, because the mean of its divisors is an integer number (60010222261).

Almost surely, 2^120020444521 is an apocalyptic number.

It is an amenable number.

120020444521 is a deficient number, since it is larger than the sum of its proper divisors (1).

120020444521 is an equidigital number, since it uses as much as digits as its factorization.

120020444521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 120020444521 its reverse (125444020021), we get a palindrome (245464464542).

The spelling of 120020444521 in words is "one hundred twenty billion, twenty million, four hundred forty-four thousand, five hundred twenty-one".