11203112213 has 4 divisors (see below), whose sum is σ = 11344923840. Its totient is φ = 11061300588.

The previous prime is 11203112209. The next prime is 11203112269. The reversal of 11203112213 is 31221130211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11203112213 - 2² = 11203112209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11203112191 and 11203112200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203112273) 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, 70905695 + ... + 70905852.

It is an arithmetic number, because the mean of its divisors is an integer number (2836230960).

Almost surely, 2^11203112213 is an apocalyptic number.

It is an amenable number.

11203112213 is a deficient number, since it is larger than the sum of its proper divisors (141811627).

11203112213 is an equidigital number, since it uses as much as digits as its factorization.

11203112213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141811626.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11203112213 its reverse (31221130211), we get a palindrome (42424242424).

The spelling of 11203112213 in words is "eleven billion, two hundred three million, one hundred twelve thousand, two hundred thirteen".