11030030172 has 240 divisors, whose sum is σ = 34612892160. Its totient is φ = 2996155008.

The previous prime is 11030030131. The next prime is 11030030177. The reversal of 11030030172 is 27103003011.

11030030172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11030030177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4405473 + ... + 4407975.

It is an arithmetic number, because the mean of its divisors is an integer number (144220384).

Almost surely, 2^11030030172 is an apocalyptic number.

11030030172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11030030172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17306446080).

11030030172 is an abundant number, since it is smaller than the sum of its proper divisors (23582861988).

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

11030030172 is a wasteful number, since it uses less digits than its factorization.

11030030172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622 (or 2611 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

Adding to 11030030172 its reverse (27103003011), we get a palindrome (38133033183).

The spelling of 11030030172 in words is "eleven billion, thirty million, thirty thousand, one hundred seventy-two".