2011220503 has 2 divisors, whose sum is σ = 2011220504. Its totient is φ = 2011220502.

The previous prime is 2011220461. The next prime is 2011220527. The reversal of 2011220503 is 3050221102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2011220503 - 2¹³ = 2011212311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011220903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005610251 + 1005610252.

It is an arithmetic number, because the mean of its divisors is an integer number (1005610252).

Almost surely, 2^2011220503 is an apocalyptic number.

2011220503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011220503 is an equidigital number, since it uses as much as digits as its factorization.

2011220503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2011220503 is about 44846.6331289206. The cubic root of 2011220503 is about 1262.2728153508.

Adding to 2011220503 its reverse (3050221102), we get a palindrome (5061441605).

The spelling of 2011220503 in words is "two billion, eleven million, two hundred twenty thousand, five hundred three".