501213211 has 8 divisors (see below), whose sum is σ = 522012384. Its totient is φ = 480795840.

The previous prime is 501213199. The next prime is 501213253. The reversal of 501213211 is 112312105.

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 501213211 - 2¹⁵ = 501180443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501213281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92770 + ... + 98023.

It is an arithmetic number, because the mean of its divisors is an integer number (65251548).

Almost surely, 2^501213211 is an apocalyptic number.

501213211 is a deficient number, since it is larger than the sum of its proper divisors (20799173).

501213211 is a wasteful number, since it uses less digits than its factorization.

501213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190901.

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

The square root of 501213211 is about 22387.7915614739. The cubic root of 501213211 is about 794.3419582742.

Adding to 501213211 its reverse (112312105), we get a palindrome (613525316).

The spelling of 501213211 in words is "five hundred one million, two hundred thirteen thousand, two hundred eleven".