1220040203 has 2 divisors, whose sum is σ = 1220040204. Its totient is φ = 1220040202.

The previous prime is 1220040187. The next prime is 1220040229. The reversal of 1220040203 is 3020400221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220040203 - 2⁴ = 1220040187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220040233) 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, 610020101 + 610020102.

It is an arithmetic number, because the mean of its divisors is an integer number (610020102).

Almost surely, 2^1220040203 is an apocalyptic number.

1220040203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220040203 is an equidigital number, since it uses as much as digits as its factorization.

1220040203 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 14.

The square root of 1220040203 is about 34929.0738926757. The cubic root of 1220040203 is about 1068.5414672059.

Adding to 1220040203 its reverse (3020400221), we get a palindrome (4240440424).

The spelling of 1220040203 in words is "one billion, two hundred twenty million, forty thousand, two hundred three".