1303122220 has 48 divisors (see below), whose sum is σ = 2901427200. Its totient is φ = 490242240.

The previous prime is 1303122179. The next prime is 1303122241. The reversal of 1303122220 is 222213031.

It is a junction number, because it is equal to n+sod(n) for n = 1303122194 and 1303122203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40485 + ... + 65155.

It is an arithmetic number, because the mean of its divisors is an integer number (60446400).

Almost surely, 2^1303122220 is an apocalyptic number.

1303122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1303122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450713600).

1303122220 is an abundant number, since it is smaller than the sum of its proper divisors (1598304980).

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

1303122220 is a wasteful number, since it uses less digits than its factorization.

1303122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24838 (or 24836 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1303122220 is about 36098.7841900527. The cubic root of 1303122220 is about 1092.2659200680.

Adding to 1303122220 its reverse (222213031), we get a palindrome (1525335251).

The spelling of 1303122220 in words is "one billion, three hundred three million, one hundred twenty-two thousand, two hundred twenty".