1320220110 has 96 divisors (see below), whose sum is σ = 3495776256. Its totient is φ = 318859200.

The previous prime is 1320220093. The next prime is 1320220123. The reversal of 1320220110 is 110220231.

It is a super-2 number, since 2×1320220110² = 3485962277696824200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1331715 + ... + 1332705.

It is an arithmetic number, because the mean of its divisors is an integer number (36414336).

Almost surely, 2^1320220110 is an apocalyptic number.

1320220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320220110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1747888128).

1320220110 is an abundant number, since it is smaller than the sum of its proper divisors (2175556146).

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

1320220110 is a wasteful number, since it uses less digits than its factorization.

1320220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1320220110 is about 36334.8332870814. The cubic root of 1320220110 is about 1097.0222798639.

Adding to 1320220110 its reverse (110220231), we get a palindrome (1430440341).

The spelling of 1320220110 in words is "one billion, three hundred twenty million, two hundred twenty thousand, one hundred ten".