11210687521 has 16 divisors (see below), whose sum is σ = 12319070400. Its totient is φ = 10117298880.

The previous prime is 11210687491. The next prime is 11210687539. The reversal of 11210687521 is 12578601211.

It is a cyclic number.

It is not a de Polignac number, because 11210687521 - 2²⁷ = 11076469793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11210687561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2462155 + ... + 2466703.

It is an arithmetic number, because the mean of its divisors is an integer number (769941900).

Almost surely, 2^11210687521 is an apocalyptic number.

11210687521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11210687521 is a deficient number, since it is larger than the sum of its proper divisors (1108382879).

11210687521 is a wasteful number, since it uses less digits than its factorization.

11210687521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144.

The product of its (nonzero) digits is 6720, while the sum is 34.

The spelling of 11210687521 in words is "eleven billion, two hundred ten million, six hundred eighty-seven thousand, five hundred twenty-one".