1220220032 has 16 divisors (see below), whose sum is σ = 2430907350. Its totient is φ = 610109952.

The previous prime is 1220220031. The next prime is 1220220049. The reversal of 1220220032 is 2300220221.

It can be written as a sum of positive squares in only one way, i.e., 1069028416 + 151191616 = 32696^2 + 12296^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 1220219989 and 1220220016.

It is not an unprimeable number, because it can be changed into a prime (1220220031) by changing a digit.

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 as a sum of consecutive naturals, namely, 4766357 + ... + 4766612.

Almost surely, 2^1220220032 is an apocalyptic number.

It is an amenable number.

1220220032 is a deficient number, since it is larger than the sum of its proper divisors (1210687318).

1220220032 is an frugal number, since it uses more digits than its factorization.

1220220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532983 (or 9532971 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1220220032 is about 34931.6480000586. The cubic root of 1220220032 is about 1068.5939641928.

Adding to 1220220032 its reverse (2300220221), we get a palindrome (3520440253).

The spelling of 1220220032 in words is "one billion, two hundred twenty million, two hundred twenty thousand, thirty-two".