8816121 has 20 divisors (see below), whose sum is σ = 13598464. Its totient is φ = 5686200.

The previous prime is 8816117. The next prime is 8816123. The reversal of 8816121 is 1216188.

8816121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8816121 - 2² = 8816117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8816123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 756 + ... + 4266.

Almost surely, 2^8816121 is an apocalyptic number.

8816121 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8816121 is a deficient number, since it is larger than the sum of its proper divisors (4782343).

8816121 is a wasteful number, since it uses less digits than its factorization.

8816121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554 (or 3545 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 8816121 is about 2969.1953455440. The cubic root of 8816121 is about 206.5820173042.

The spelling of 8816121 in words is "eight million, eight hundred sixteen thousand, one hundred twenty-one".