1220210 has 8 divisors (see below), whose sum is σ = 2196396. Its totient is φ = 488080.

The previous prime is 1220203. The next prime is 1220239. The reversal of 1220210 is 120221.

It can be written as a sum of positive squares in 2 ways, for example, as 1190281 + 29929 = 1091^2 + 173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61001 + ... + 61020.

2^1220210 is an apocalyptic number.

1220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220210 is a deficient number, since it is larger than the sum of its proper divisors (976186).

1220210 is a wasteful number, since it uses less digits than its factorization.

1220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122028.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1220210 is about 1104.6311601616. The cubic root of 1220210 is about 106.8591035714.

Adding to 1220210 its reverse (120221), we get a palindrome (1340431).

The spelling of 1220210 in words is "one million, two hundred twenty thousand, two hundred ten".