122273521 has 4 divisors (see below), whose sum is σ = 125255844. Its totient is φ = 119291200.

The previous prime is 122273513. The next prime is 122273527. The reversal of 122273521 is 125372221.

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 36433296 + 85840225 = 6036^2 + 9265^2 .

It is a cyclic number.

It is not a de Polignac number, because 122273521 - 2³ = 122273513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122273527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491100 + ... + 1491181.

It is an arithmetic number, because the mean of its divisors is an integer number (31313961).

Almost surely, 2^122273521 is an apocalyptic number.

It is an amenable number.

122273521 is a deficient number, since it is larger than the sum of its proper divisors (2982323).

122273521 is an equidigital number, since it uses as much as digits as its factorization.

122273521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982322.

The product of its digits is 1680, while the sum is 25.

The square root of 122273521 is about 11057.7357989780. The cubic root of 122273521 is about 496.3379387627.

The spelling of 122273521 in words is "one hundred twenty-two million, two hundred seventy-three thousand, five hundred twenty-one".