1223210 has 8 divisors (see below), whose sum is σ = 2201796. Its totient is φ = 489280.

The previous prime is 1223207. The next prime is 1223231. The reversal of 1223210 is 123221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1194649 + 28561 = 1093^2 + 169^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1223191 and 1223200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61151 + ... + 61170.

2^1223210 is an apocalyptic number.

1223210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223210 is a deficient number, since it is larger than the sum of its proper divisors (978586).

1223210 is a wasteful number, since it uses less digits than its factorization.

1223210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122328.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1223210 is about 1105.9882458688. The cubic root of 1223210 is about 106.9466062543.

Adding to 1223210 its sum of digits (11), we get a palindrome (1223221).

Adding to 1223210 its reverse (123221), we get a palindrome (1346431).

The spelling of 1223210 in words is "one million, two hundred twenty-three thousand, two hundred ten".