11820203 has 2 divisors, whose sum is σ = 11820204. Its totient is φ = 11820202.

The previous prime is 11820199. The next prime is 11820209. The reversal of 11820203 is 30202811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11820203 - 2² = 11820199 is a prime.

It is a super-2 number, since 2×11820203² = 279434397922418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11820209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5910101 + 5910102.

It is an arithmetic number, because the mean of its divisors is an integer number (5910102).

Almost surely, 2^11820203 is an apocalyptic number.

11820203 is a deficient number, since it is larger than the sum of its proper divisors (1).

11820203 is an equidigital number, since it uses as much as digits as its factorization.

11820203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 11820203 is about 3438.0522101911. The cubic root of 11820203 is about 227.7936665674.

The spelling of 11820203 in words is "eleven million, eight hundred twenty thousand, two hundred three".