1220003210 has 16 divisors (see below), whose sum is σ = 2216154600. Its totient is φ = 483523776.

The previous prime is 1220003203. The next prime is 1220003231. The reversal of 1220003210 is 123000221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1161923569 + 58079641 = 34087^2 + 7621^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220003191 and 1220003200.

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, 558545 + ... + 560724.

Almost surely, 2^1220003210 is an apocalyptic number.

1220003210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220003210 is a deficient number, since it is larger than the sum of its proper divisors (996151390).

1220003210 is a wasteful number, since it uses less digits than its factorization.

1220003210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119385.

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

The square root of 1220003210 is about 34928.5443441321. The cubic root of 1220003210 is about 1068.5306673012.

Adding to 1220003210 its reverse (123000221), we get a palindrome (1343003431).

The spelling of 1220003210 in words is "one billion, two hundred twenty million, three thousand, two hundred ten".