1201303220 has 24 divisors (see below), whose sum is σ = 2716794024. Its totient is φ = 443558016.

The previous prime is 1201303219. The next prime is 1201303237. The reversal of 1201303220 is 223031021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51008164 + 1150295056 = 7142^2 + 33916^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201303195 and 1201303204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2309939 + ... + 2310458.

It is an arithmetic number, because the mean of its divisors is an integer number (113199751).

Almost surely, 2^1201303220 is an apocalyptic number.

1201303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201303220 is an abundant number, since it is smaller than the sum of its proper divisors (1515490804).

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

1201303220 is a wasteful number, since it uses less digits than its factorization.

1201303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620419 (or 4620417 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1201303220 is about 34659.8214075030. The cubic root of 1201303220 is about 1063.0431183130.

Adding to 1201303220 its reverse (223031021), we get a palindrome (1424334241).

The spelling of 1201303220 in words is "one billion, two hundred one million, three hundred three thousand, two hundred twenty".