2211916 has 24 divisors (see below), whose sum is σ = 4457376. Its totient is φ = 940800.

The previous prime is 2211893. The next prime is 2211919. The reversal of 2211916 is 6191122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5316 + ... + 5716.

It is an arithmetic number, because the mean of its divisors is an integer number (185724).

2^2211916 is an apocalyptic number.

It is an amenable number.

2211916 is an abundant number, since it is smaller than the sum of its proper divisors (2245460).

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

2211916 is a wasteful number, since it uses less digits than its factorization.

2211916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 607 counting only the distinct ones).

The product of its digits is 216, while the sum is 22.

The square root of 2211916 is about 1487.2511556560. The cubic root of 2211916 is about 130.2935378808.

The spelling of 2211916 in words is "two million, two hundred eleven thousand, nine hundred sixteen".