1320225210 has 64 divisors (see below), whose sum is σ = 3634191360. Its totient is φ = 340701120.

The previous prime is 1320225187. The next prime is 1320225229. The reversal of 1320225210 is 125220231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70497 + ... + 87236.

It is an arithmetic number, because the mean of its divisors is an integer number (56784240).

Almost surely, 2^1320225210 is an apocalyptic number.

1320225210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320225210 is an abundant number, since it is smaller than the sum of its proper divisors (2313966150).

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

1320225210 is a wasteful number, since it uses less digits than its factorization.

1320225210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157780 (or 157774 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1320225210 is about 36334.9034676026. The cubic root of 1320225210 is about 1097.0236924583.

Adding to 1320225210 its reverse (125220231), we get a palindrome (1445445441).

The spelling of 1320225210 in words is "one billion, three hundred twenty million, two hundred twenty-five thousand, two hundred ten".