11522001256 has 32 divisors (see below), whose sum is σ = 21936062880. Its totient is φ = 5672462400.

The previous prime is 11522001247. The next prime is 11522001307. The reversal of 11522001256 is 65210022511.

11522001256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×11522001256³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11522001256.

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 7 ways as a sum of consecutive naturals, for example, 1851991 + ... + 1858201.

It is an arithmetic number, because the mean of its divisors is an integer number (685501965).

Almost surely, 2^11522001256 is an apocalyptic number.

It is an amenable number.

11522001256 is a deficient number, since it is larger than the sum of its proper divisors (10414061624).

11522001256 is a wasteful number, since it uses less digits than its factorization.

11522001256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9745 (or 9741 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 11522001256 its reverse (65210022511), we get a palindrome (76732023767).

The spelling of 11522001256 in words is "eleven billion, five hundred twenty-two million, one thousand, two hundred fifty-six".