11121016656 has 40 divisors (see below), whose sum is σ = 28821708864. Its totient is φ = 3695080960.

The previous prime is 11121016607. The next prime is 11121016681. The reversal of 11121016656 is 65661012111.

It is a super-3 number, since 3×11121016656³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357561 + ... + 387416.

Almost surely, 2^11121016656 is an apocalyptic number.

11121016656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11121016656 is an abundant number, since it is smaller than the sum of its proper divisors (17700692208).

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

11121016656 is a wasteful number, since it uses less digits than its factorization.

11121016656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745299 (or 745293 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

Adding to 11121016656 its reverse (65661012111), we get a palindrome (76782028767).

The spelling of 11121016656 in words is "eleven billion, one hundred twenty-one million, sixteen thousand, six hundred fifty-six".