11310221203 has 4 divisors (see below), whose sum is σ = 11453388640. Its totient is φ = 11167053768.

The previous prime is 11310221171. The next prime is 11310221207. The reversal of 11310221203 is 30212201311.

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 11310221203 - 2⁵ = 11310221171 is a prime.

It is a super-2 number, since 2×11310221203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11310221207) 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, 71583600 + ... + 71583757.

It is an arithmetic number, because the mean of its divisors is an integer number (2863347160).

Almost surely, 2^11310221203 is an apocalyptic number.

11310221203 is a deficient number, since it is larger than the sum of its proper divisors (143167437).

11310221203 is an equidigital number, since it uses as much as digits as its factorization.

11310221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143167436.

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

Adding to 11310221203 its reverse (30212201311), we get a palindrome (41522422514).

The spelling of 11310221203 in words is "eleven billion, three hundred ten million, two hundred twenty-one thousand, two hundred three".