2201816 has 8 divisors (see below), whose sum is σ = 4128420. Its totient is φ = 1100904.

The previous prime is 2201807. The next prime is 2201827. The reversal of 2201816 is 6181022.

2201816 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137606 + ... + 137621.

2^2201816 is an apocalyptic number.

It is an amenable number.

2201816 is a deficient number, since it is larger than the sum of its proper divisors (1926604).

2201816 is a wasteful number, since it uses less digits than its factorization.

2201816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275233 (or 275229 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2201816 is about 1483.8517446160. The cubic root of 2201816 is about 130.0949208138.

Adding to 2201816 its reverse (6181022), we get a palindrome (8382838).

The spelling of 2201816 in words is "two million, two hundred one thousand, eight hundred sixteen".