11212232113 has 4 divisors (see below), whose sum is σ = 11213955940. Its totient is φ = 11210508288.

The previous prime is 11212232089. The next prime is 11212232159. The reversal of 11212232113 is 31123221211.

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 867714849 + 10344517264 = 29457^2 + 101708^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212232113 - 2⁹ = 11212231601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212238113) 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, 852120 + ... + 865177.

It is an arithmetic number, because the mean of its divisors is an integer number (2803488985).

Almost surely, 2^11212232113 is an apocalyptic number.

It is an amenable number.

11212232113 is a deficient number, since it is larger than the sum of its proper divisors (1723827).

11212232113 is an equidigital number, since it uses as much as digits as its factorization.

11212232113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723826.

The product of its digits is 144, while the sum is 19.

Adding to 11212232113 its reverse (31123221211), we get a palindrome (42335453324).

The spelling of 11212232113 in words is "eleven billion, two hundred twelve million, two hundred thirty-two thousand, one hundred thirteen".