1122244220 has 12 divisors (see below), whose sum is σ = 2356712904. Its totient is φ = 448897680.

The previous prime is 1122244159. The next prime is 1122244243. The reversal of 1122244220 is 224422211.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 56112211 = 1122244220 / (1 + 1 + 2 + 2 + 2 + 4 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1122244192 and 1122244201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28056086 + ... + 28056125.

It is an arithmetic number, because the mean of its divisors is an integer number (196392742).

Almost surely, 2^1122244220 is an apocalyptic number.

1122244220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122244220 is an abundant number, since it is smaller than the sum of its proper divisors (1234468684).

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

1122244220 is a wasteful number, since it uses less digits than its factorization.

1122244220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56112220 (or 56112218 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1122244220 is about 33499.9137312322. The cubic root of 1122244220 is about 1039.1919944415.

Adding to 1122244220 its reverse (224422211), we get a palindrome (1346666431).

The spelling of 1122244220 in words is "one billion, one hundred twenty-two million, two hundred forty-four thousand, two hundred twenty".