11520022005 has 12 divisors (see below), whose sum is σ = 19968038220. Its totient is φ = 6144011712.

The previous prime is 11520021949. The next prime is 11520022013. The reversal of 11520022005 is 50022002511.

It can be written as a sum of positive squares in 2 ways, for example, as 7767601956 + 3752420049 = 88134^2 + 61257^2 .

It is not a de Polignac number, because 11520022005 - 2²⁴ = 11503244789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128000200 + ... + 128000289.

It is an arithmetic number, because the mean of its divisors is an integer number (1664003185).

Almost surely, 2^11520022005 is an apocalyptic number.

11520022005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11520022005 is a deficient number, since it is larger than the sum of its proper divisors (8448016215).

11520022005 is a wasteful number, since it uses less digits than its factorization.

11520022005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256000500 (or 256000497 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 11520022005 its reverse (50022002511), we get a palindrome (61542024516).

The spelling of 11520022005 in words is "eleven billion, five hundred twenty million, twenty-two thousand, five".