11045143220 has 12 divisors (see below), whose sum is σ = 23194800804. Its totient is φ = 4418057280.

The previous prime is 11045143199. The next prime is 11045143223. The reversal of 11045143220 is 2234154011.

It can be written as a sum of positive squares in 2 ways, for example, as 3913002916 + 7132140304 = 62554^2 + 84452^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11045143223) 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, 276128561 + ... + 276128600.

It is an arithmetic number, because the mean of its divisors is an integer number (1932900067).

Almost surely, 2^11045143220 is an apocalyptic number.

11045143220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11045143220 is an abundant number, since it is smaller than the sum of its proper divisors (12149657584).

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

11045143220 is a wasteful number, since it uses less digits than its factorization.

11045143220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552257170 (or 552257168 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 11045143220 its reverse (2234154011), we get a palindrome (13279297231).

The spelling of 11045143220 in words is "eleven billion, forty-five million, one hundred forty-three thousand, two hundred twenty".