1203220213 has 4 divisors (see below), whose sum is σ = 1295775628. Its totient is φ = 1110664800.

The previous prime is 1203220189. The next prime is 1203220241. The reversal of 1203220213 is 3120223021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 722426884 + 480793329 = 26878^2 + 21927^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203220213 - 2¹⁷ = 1203089141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203220013) 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, 46277688 + ... + 46277713.

It is an arithmetic number, because the mean of its divisors is an integer number (323943907).

Almost surely, 2^1203220213 is an apocalyptic number.

1203220213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1203220213 is a deficient number, since it is larger than the sum of its proper divisors (92555415).

1203220213 is an equidigital number, since it uses as much as digits as its factorization.

1203220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92555414.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1203220213 is about 34687.4647819641. The cubic root of 1203220213 is about 1063.6082721033.

Adding to 1203220213 its reverse (3120223021), we get a palindrome (4323443234).

The spelling of 1203220213 in words is "one billion, two hundred three million, two hundred twenty thousand, two hundred thirteen".