1120201220 has 24 divisors (see below), whose sum is σ = 2375265984. Its totient is φ = 443729376.

The previous prime is 1120201219. The next prime is 1120201237. The reversal of 1120201220 is 221020211.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 269834 + ... + 273953.

It is an arithmetic number, because the mean of its divisors is an integer number (98969416).

Almost surely, 2^1120201220 is an apocalyptic number.

1120201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120201220 is an abundant number, since it is smaller than the sum of its proper divisors (1255064764).

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

1120201220 is a wasteful number, since it uses less digits than its factorization.

1120201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543899 (or 543897 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1120201220 is about 33469.4072251063. The cubic root of 1120201220 is about 1038.5610091260.

Adding to 1120201220 its reverse (221020211), we get a palindrome (1341221431).

The spelling of 1120201220 in words is "one billion, one hundred twenty million, two hundred one thousand, two hundred twenty".