1000301220 has 36 divisors (see below), whose sum is σ = 3034247580. Its totient is φ = 266746944.

The previous prime is 1000301213. The next prime is 1000301243. The reversal of 1000301220 is 221030001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 350663076 + 649638144 = 18726^2 + 25488^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

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 11 ways as a sum of consecutive naturals, for example, 2778435 + ... + 2778794.

It is an arithmetic number, because the mean of its divisors is an integer number (84284655).

Almost surely, 2^1000301220 is an apocalyptic number.

1000301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000301220 is an abundant number, since it is smaller than the sum of its proper divisors (2033946360).

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

1000301220 is a wasteful number, since it uses less digits than its factorization.

1000301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557244 (or 5557239 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1000301220 is about 31627.5389494662. The cubic root of 1000301220 is about 1000.1003965869.

Adding to 1000301220 its reverse (221030001), we get a palindrome (1221331221).

The spelling of 1000301220 in words is "one billion, three hundred one thousand, two hundred twenty".