501120221 has 8 divisors (see below), whose sum is σ = 573347520. Its totient is φ = 429052608.

The previous prime is 501120187. The next prime is 501120233. The reversal of 501120221 is 122021105.

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 501120221 - 2²² = 496925917 is a prime.

It is a super-2 number, since 2×501120221² = 502242951790177682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501120196 and 501120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501120281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33116 + ... + 45813.

It is an arithmetic number, because the mean of its divisors is an integer number (71668440).

Almost surely, 2^501120221 is an apocalyptic number.

It is an amenable number.

501120221 is a deficient number, since it is larger than the sum of its proper divisors (72227299).

501120221 is an equidigital number, since it uses as much as digits as its factorization.

501120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79843.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 501120221 is about 22385.7146635974. The cubic root of 501120221 is about 794.2928305274.

Adding to 501120221 its reverse (122021105), we get a palindrome (623141326).

The spelling of 501120221 in words is "five hundred one million, one hundred twenty thousand, two hundred twenty-one".