1022221120 has 28 divisors (see below), whose sum is σ = 2434164804. Its totient is φ = 408888320.

The previous prime is 1022221093. The next prime is 1022221121. The reversal of 1022221120 is 211222201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 492484864 + 529736256 = 22192^2 + 23016^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1022221120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022221121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1596901 + ... + 1597540.

Almost surely, 2^1022221120 is an apocalyptic number.

1022221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022221120 is an abundant number, since it is smaller than the sum of its proper divisors (1411943684).

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

1022221120 is an equidigital number, since it uses as much as digits as its factorization.

1022221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194458 (or 3194448 counting only the distinct ones).

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

The square root of 1022221120 is about 31972.1929182219. The cubic root of 1022221120 is about 1007.3528431883.

Adding to 1022221120 its reverse (211222201), we get a palindrome (1233443321).

It can be divided in two parts, 102 and 2221120, that added together give a palindrome (2221222).

The spelling of 1022221120 in words is "one billion, twenty-two million, two hundred twenty-one thousand, one hundred twenty".