500200121 has 4 divisors (see below), whose sum is σ = 500269200. Its totient is φ = 500131044.

The previous prime is 500200109. The next prime is 500200193. The reversal of 500200121 is 121002005.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500200121 is a prime.

It is a super-2 number, since 2×500200121² = 500400322096829282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500209121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22211 + ... + 38648.

It is an arithmetic number, because the mean of its divisors is an integer number (125067300).

Almost surely, 2^500200121 is an apocalyptic number.

It is an amenable number.

500200121 is a deficient number, since it is larger than the sum of its proper divisors (69079).

500200121 is an equidigital number, since it uses as much as digits as its factorization.

500200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69078.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 500200121 is about 22365.1541689298. The cubic root of 500200121 is about 793.8064026219.

Adding to 500200121 its reverse (121002005), we get a palindrome (621202126).

The spelling of 500200121 in words is "five hundred million, two hundred thousand, one hundred twenty-one".