120065051521 has 4 divisors (see below), whose sum is σ = 120236329044. Its totient is φ = 119893774000.

The previous prime is 120065051501. The next prime is 120065051551. The reversal of 120065051521 is 125150560021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108577499121 + 11487552400 = 329511^2 + 107180^2 .

It is a cyclic number.

It is not a de Polignac number, because 120065051521 - 2²¹ = 120062954369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120065051521.

It is not an unprimeable number, because it can be changed into a prime (120065051501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85637710 + ... + 85639111.

It is an arithmetic number, because the mean of its divisors is an integer number (30059082261).

Almost surely, 2^120065051521 is an apocalyptic number.

It is an amenable number.

120065051521 is a deficient number, since it is larger than the sum of its proper divisors (171277523).

120065051521 is an equidigital number, since it uses as much as digits as its factorization.

120065051521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171277522.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 120065051521 in words is "one hundred twenty billion, sixty-five million, fifty-one thousand, five hundred twenty-one".