122196521 has 8 divisors (see below), whose sum is σ = 123664200. Its totient is φ = 120735360.

The previous prime is 122196509. The next prime is 122196541. The reversal of 122196521 is 125691221.

It can be written as a sum of positive squares in 4 ways, for example, as 42719296 + 79477225 = 6536^2 + 8915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122196521 - 2⁶ = 122196457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122196541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43211 + ... + 45951.

It is an arithmetic number, because the mean of its divisors is an integer number (15458025).

Almost surely, 2^122196521 is an apocalyptic number.

It is an amenable number.

122196521 is a deficient number, since it is larger than the sum of its proper divisors (1467679).

122196521 is a wasteful number, since it uses less digits than its factorization.

122196521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259.

The product of its digits is 2160, while the sum is 29.

The square root of 122196521 is about 11054.2535252273. The cubic root of 122196521 is about 496.2337296469.

The spelling of 122196521 in words is "one hundred twenty-two million, one hundred ninety-six thousand, five hundred twenty-one".