122064521 has 4 divisors (see below), whose sum is σ = 123144852. Its totient is φ = 120984192.

The previous prime is 122064491. The next prime is 122064529. The reversal of 122064521 is 125460221.

It is a happy number.

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 43494025 + 78570496 = 6595^2 + 8864^2 .

It is a cyclic number.

It is not a de Polignac number, because 122064521 - 2⁶ = 122064457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122064529) 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 in 3 ways as a sum of consecutive naturals, for example, 539996 + ... + 540221.

It is an arithmetic number, because the mean of its divisors is an integer number (30786213).

Almost surely, 2^122064521 is an apocalyptic number.

It is an amenable number.

122064521 is a deficient number, since it is larger than the sum of its proper divisors (1080331).

122064521 is a wasteful number, since it uses less digits than its factorization.

122064521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080330.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 122064521 is about 11048.2813595600. The cubic root of 122064521 is about 496.0549835530.

The spelling of 122064521 in words is "one hundred twenty-two million, sixty-four thousand, five hundred twenty-one".