11123312130 has 72 divisors (see below), whose sum is σ = 33642357372. Its totient is φ = 2542470336.

The previous prime is 11123312129. The next prime is 11123312131. The reversal of 11123312130 is 3121332111.

It is an interprime number because it is at equal distance from previous prime (11123312129) and next prime (11123312131).

It can be written as a sum of positive squares in 2 ways, for example, as 11055891609 + 67420521 = 105147^2 + 8211^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11123312131) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1256737 + ... + 1265556.

Almost surely, 2^11123312130 is an apocalyptic number.

11123312130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11123312130 is an abundant number, since it is smaller than the sum of its proper divisors (22519045242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11123312130 is a wasteful number, since it uses less digits than its factorization.

11123312130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522320 (or 2522310 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11123312130 its reverse (3121332111), we get a palindrome (14244644241).

The spelling of 11123312130 in words is "eleven billion, one hundred twenty-three million, three hundred twelve thousand, one hundred thirty".