122201389 has 8 divisors (see below), whose sum is σ = 133851960. Its totient is φ = 111046656.

The previous prime is 122201377. The next prime is 122201413. The reversal of 122201389 is 983102221.

It can be written as a sum of positive squares in 4 ways, for example, as 15760900 + 106440489 = 3970^2 + 10317^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122201389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122201309) 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 7 ways as a sum of consecutive naturals, for example, 123444 + ... + 124429.

It is an arithmetic number, because the mean of its divisors is an integer number (16731495).

Almost surely, 2^122201389 is an apocalyptic number.

It is an amenable number.

122201389 is a deficient number, since it is larger than the sum of its proper divisors (11650571).

122201389 is a wasteful number, since it uses less digits than its factorization.

122201389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247919.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 122201389 is about 11054.4737097702. The cubic root of 122201389 is about 496.2403191246.

The spelling of 122201389 in words is "one hundred twenty-two million, two hundred one thousand, three hundred eighty-nine".