601251221 has 8 divisors (see below), whose sum is σ = 618306360. Its totient is φ = 584238528.

The previous prime is 601251199. The next prime is 601251251. The reversal of 601251221 is 122152106.

It can be written as a sum of positive squares in 4 ways, for example, as 369024100 + 232227121 = 19210^2 + 15239^2 .

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-601251221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 601251193 and 601251202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601251251) 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 7 ways as a sum of consecutive naturals, for example, 19295 + ... + 39683.

It is an arithmetic number, because the mean of its divisors is an integer number (77288295).

Almost surely, 2^601251221 is an apocalyptic number.

It is an amenable number.

601251221 is a deficient number, since it is larger than the sum of its proper divisors (17055139).

601251221 is a wasteful number, since it uses less digits than its factorization.

601251221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21223.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 601251221 is about 24520.4245681024. The cubic root of 601251221 is about 844.0185474874.

The spelling of 601251221 in words is "six hundred one million, two hundred fifty-one thousand, two hundred twenty-one".