11220434430 has 64 divisors (see below), whose sum is σ = 27581534208. Its totient is φ = 2920211840.

The previous prime is 11220434359. The next prime is 11220434437. The reversal of 11220434430 is 3443402211.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11220434430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220434437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285217 + ... + 322163.

It is an arithmetic number, because the mean of its divisors is an integer number (430961472).

Almost surely, 2^11220434430 is an apocalyptic number.

11220434430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11220434430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13790767104).

11220434430 is an abundant number, since it is smaller than the sum of its proper divisors (16361099778).

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

11220434430 is a wasteful number, since it uses less digits than its factorization.

11220434430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37201.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 11220434430 its reverse (3443402211), we get a palindrome (14663836641).

The spelling of 11220434430 in words is "eleven billion, two hundred twenty million, four hundred thirty-four thousand, four hundred thirty".