11166221016 has 48 divisors (see below), whose sum is σ = 31284676800. Its totient is φ = 3593725632.

The previous prime is 11166220981. The next prime is 11166221023. The reversal of 11166221016 is 61012266111.

11166221016 is a `hidden beast` number, since 1 + 1 + 16 + 622 + 10 + 16 = 666.

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, 2671816 + ... + 2675991.

It is an arithmetic number, because the mean of its divisors is an integer number (651764100).

Almost surely, 2^11166221016 is an apocalyptic number.

It is an amenable number.

11166221016 is an abundant number, since it is smaller than the sum of its proper divisors (20118455784).

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

11166221016 is a wasteful number, since it uses less digits than its factorization.

11166221016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5347848 (or 5347841 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 11166221016 its reverse (61012266111), we get a palindrome (72178487127).

The spelling of 11166221016 in words is "eleven billion, one hundred sixty-six million, two hundred twenty-one thousand, sixteen".