2221206 has 16 divisors (see below), whose sum is σ = 4784304. Its totient is φ = 683424.

The previous prime is 2221187. The next prime is 2221217. The reversal of 2221206 is 6021222.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14161 + ... + 14316.

It is an arithmetic number, because the mean of its divisors is an integer number (299019).

2^2221206 is an apocalyptic number.

2221206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2221206 is an abundant number, since it is smaller than the sum of its proper divisors (2563098).

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

2221206 is a wasteful number, since it uses less digits than its factorization.

2221206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28495.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2221206 is about 1490.3710947278. The cubic root of 2221206 is about 130.4756931285.

Adding to 2221206 its reverse (6021222), we get a palindrome (8242428).

The spelling of 2221206 in words is "two million, two hundred twenty-one thousand, two hundred six".