11203222231 has 4 divisors (see below), whose sum is σ = 11209117464. Its totient is φ = 11197327000.

The previous prime is 11203222213. The next prime is 11203222253. The reversal of 11203222231 is 13222230211.

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 11203222231 - 2⁷ = 11203222103 is a prime.

It is a super-2 number, since 2×11203222231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11203222199 and 11203222208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203222211) 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, 2944765 + ... + 2948566.

It is an arithmetic number, because the mean of its divisors is an integer number (2802279366).

Almost surely, 2^11203222231 is an apocalyptic number.

11203222231 is a deficient number, since it is larger than the sum of its proper divisors (5895233).

11203222231 is an equidigital number, since it uses as much as digits as its factorization.

11203222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5895232.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11203222231 its reverse (13222230211), we get a palindrome (24425452442).

The spelling of 11203222231 in words is "eleven billion, two hundred three million, two hundred twenty-two thousand, two hundred thirty-one".