1012041220 has 12 divisors (see below), whose sum is σ = 2125286604. Its totient is φ = 404816480.

The previous prime is 1012041211. The next prime is 1012041269. The reversal of 1012041220 is 221402101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 246301636 + 765739584 = 15694^2 + 27672^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1012041220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25301011 + ... + 25301050.

It is an arithmetic number, because the mean of its divisors is an integer number (177107217).

Almost surely, 2^1012041220 is an apocalyptic number.

1012041220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012041220 is an abundant number, since it is smaller than the sum of its proper divisors (1113245384).

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

1012041220 is a wasteful number, since it uses less digits than its factorization.

1012041220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50602070 (or 50602068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1012041220 is about 31812.5953043759. The cubic root of 1012041220 is about 1003.9977368033.

Adding to 1012041220 its reverse (221402101), we get a palindrome (1233443321).

The spelling of 1012041220 in words is "one billion, twelve million, forty-one thousand, two hundred twenty".