1123002220 has 24 divisors (see below), whose sum is σ = 2482426800. Its totient is φ = 425558592.

The previous prime is 1123002217. The next prime is 1123002227. The reversal of 1123002220 is 222003211.

It is a super-2 number, since 2×1123002220² = 2522267972249856800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123002220.

It is not an unprimeable number, because it can be changed into a prime (1123002227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1477255 + ... + 1478014.

It is an arithmetic number, because the mean of its divisors is an integer number (103434450).

Almost surely, 2^1123002220 is an apocalyptic number.

1123002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123002220 is an abundant number, since it is smaller than the sum of its proper divisors (1359424580).

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

1123002220 is a wasteful number, since it uses less digits than its factorization.

1123002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955297 (or 2955295 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1123002220 is about 33511.2252834778. The cubic root of 1123002220 is about 1039.4259097327.

Adding to 1123002220 its reverse (222003211), we get a palindrome (1345005431).

Subtracting from 1123002220 its reverse (222003211), we obtain a palindrome (900999009).

The spelling of 1123002220 in words is "one billion, one hundred twenty-three million, two thousand, two hundred twenty".