11203120213 has 4 divisors (see below), whose sum is σ = 11251202508. Its totient is φ = 11155037920.

The previous prime is 11203120189. The next prime is 11203120223. The reversal of 11203120213 is 31202130211.

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 6942555684 + 4260564529 = 83322^2 + 65273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11203120213 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 (11203120223) 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, 24040798 + ... + 24041263.

It is an arithmetic number, because the mean of its divisors is an integer number (2812800627).

Almost surely, 2^11203120213 is an apocalyptic number.

It is an amenable number.

11203120213 is a deficient number, since it is larger than the sum of its proper divisors (48082295).

11203120213 is an equidigital number, since it uses as much as digits as its factorization.

11203120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48082294.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11203120213 its reverse (31202130211), we get a palindrome (42405250424).

The spelling of 11203120213 in words is "eleven billion, two hundred three million, one hundred twenty thousand, two hundred thirteen".