503112121 has 2 divisors, whose sum is σ = 503112122. Its totient is φ = 503112120.

The previous prime is 503112109. The next prime is 503112139. The reversal of 503112121 is 121211305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252333225 + 250778896 = 15885^2 + 15836^2 .

It is a cyclic number.

It is not a de Polignac number, because 503112121 - 2⁵ = 503112089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 503112095 and 503112104.

It is not a weakly prime, because it can be changed into another prime (503112221) 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 as a sum of consecutive naturals, namely, 251556060 + 251556061.

It is an arithmetic number, because the mean of its divisors is an integer number (251556061).

Almost surely, 2^503112121 is an apocalyptic number.

It is an amenable number.

503112121 is a deficient number, since it is larger than the sum of its proper divisors (1).

503112121 is an equidigital number, since it uses as much as digits as its factorization.

503112121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 503112121 is about 22430.1609668767. The cubic root of 503112121 is about 795.3438492545.

Adding to 503112121 its reverse (121211305), we get a palindrome (624323426).

The spelling of 503112121 in words is "five hundred three million, one hundred twelve thousand, one hundred twenty-one".