1220300203 has 4 divisors (see below), whose sum is σ = 1221055560. Its totient is φ = 1219544848.

The previous prime is 1220300197. The next prime is 1220300227. The reversal of 1220300203 is 3020030221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220300203 - 2²⁵ = 1186745771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220300233) 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, 375250 + ... + 378487.

It is an arithmetic number, because the mean of its divisors is an integer number (305263890).

Almost surely, 2^1220300203 is an apocalyptic number.

1220300203 is a deficient number, since it is larger than the sum of its proper divisors (755357).

1220300203 is an equidigital number, since it uses as much as digits as its factorization.

1220300203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755356.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1220300203 is about 34932.7955222596. The cubic root of 1220300203 is about 1068.6173666306.

Adding to 1220300203 its reverse (3020030221), we get a palindrome (4240330424).

The spelling of 1220300203 in words is "one billion, two hundred twenty million, three hundred thousand, two hundred three".