501112321 has 2 divisors, whose sum is σ = 501112322. Its totient is φ = 501112320.

The previous prime is 501112307. The next prime is 501112387. The reversal of 501112321 is 123211105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442513296 + 58599025 = 21036^2 + 7655^2 .

It is a cyclic number.

It is not a de Polignac number, because 501112321 - 2¹⁷ = 500981249 is a prime.

It is a super-2 number, since 2×501112321² = 502227116516014082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 501112295 and 501112304.

It is not a weakly prime, because it can be changed into another prime (501112301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250556160 + 250556161.

It is an arithmetic number, because the mean of its divisors is an integer number (250556161).

Almost surely, 2^501112321 is an apocalyptic number.

It is an amenable number.

501112321 is a deficient number, since it is larger than the sum of its proper divisors (1).

501112321 is an equidigital number, since it uses as much as digits as its factorization.

501112321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 501112321 is about 22385.5382110862. The cubic root of 501112321 is about 794.2886565813.

Adding to 501112321 its reverse (123211105), we get a palindrome (624323426).

The spelling of 501112321 in words is "five hundred one million, one hundred twelve thousand, three hundred twenty-one".