1120122220 has 96 divisors (see below), whose sum is σ = 2749759488. Its totient is φ = 375363072.

The previous prime is 1120122203. The next prime is 1120122221. The reversal of 1120122220 is 222210211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120122220.

It is not an unprimeable number, because it can be changed into a prime (1120122221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1297509 + ... + 1298371.

It is an arithmetic number, because the mean of its divisors is an integer number (28643328).

Almost surely, 2^1120122220 is an apocalyptic number.

1120122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1120122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374879744).

1120122220 is an abundant number, since it is smaller than the sum of its proper divisors (1629637268).

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

1120122220 is a wasteful number, since it uses less digits than its factorization.

1120122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1077 counting only the distinct ones).

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

The square root of 1120122220 is about 33468.2270220578. The cubic root of 1120122220 is about 1038.5365943908.

Adding to 1120122220 its reverse (222210211), we get a palindrome (1342332431).

The spelling of 1120122220 in words is "one billion, one hundred twenty million, one hundred twenty-two thousand, two hundred twenty".