11520220052 has 12 divisors (see below), whose sum is σ = 21993147456. Its totient is φ = 5236463640.

The previous prime is 11520220021. The next prime is 11520220069. The reversal of 11520220052 is 25002202511.

It is a happy number.

11520220052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 130911548 + ... + 130911635.

It is an arithmetic number, because the mean of its divisors is an integer number (1832762288).

Almost surely, 2^11520220052 is an apocalyptic number.

It is an amenable number.

11520220052 is a deficient number, since it is larger than the sum of its proper divisors (10472927404).

11520220052 is a wasteful number, since it uses less digits than its factorization.

11520220052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261823198 (or 261823196 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 11520220052 its reverse (25002202511), we get a palindrome (36522422563).

The spelling of 11520220052 in words is "eleven billion, five hundred twenty million, two hundred twenty thousand, fifty-two".