2220221232 has 40 divisors (see below), whose sum is σ = 6372858480. Its totient is φ = 740073600.

The previous prime is 2220221221. The next prime is 2220221249. The reversal of 2220221232 is 2321220222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2569269 + ... + 2570132.

It is an arithmetic number, because the mean of its divisors is an integer number (159321462).

Almost surely, 2^2220221232 is an apocalyptic number.

It is an amenable number.

2220221232 is an abundant number, since it is smaller than the sum of its proper divisors (4152637248).

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

2220221232 is a wasteful number, since it uses less digits than its factorization.

2220221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139418 (or 5139406 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2220221232 is about 47119.2235929244. The cubic root of 2220221232 is about 1304.5640821749.

Adding to 2220221232 its reverse (2321220222), we get a palindrome (4541441454).

It can be divided in two parts, 22202 and 21232, that added together give a palindrome (43434).

The spelling of 2220221232 in words is "two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred thirty-two".